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These are non-military specimens and images used in the advancement of aviation and Space Science for peaceful purposes, although most have their roots in WWII (like the one used with the German V2 Rocket) and the Dalton Dead Reckoning Computer. As can be expected, these are more modern variations. We've included some slide rules used by persons of notoriety in the rocketry and NASA. Some of these slide rule images are duplicated on their respective manufacturer or country gallery pages. More Aerospace and Aviation images may be found on the Historical Photos, People with SRs and Ephemera Gallery |
 Test Pilot Student and Instructor at USAF Test Pilot School, Edwards AFB c1952-1954 |
 Sir Franck Whittle Turbine |
 Watch In Space! - Breitling Navitimer Chronomat Ad |
 Slide Rule Scenes From the Movie Apollo 13 - Watch for slide rules being used in mission control |
 Air Navigation by Herbert S. Zim, 1943 US Army Pilots Doing Dead Reckoning Flight Planning |
 NASA Display, Astronaut Neil Armstrong's Slide Rule (Apollo 11) |
ChiefDesignerOfSovietSpacecraft.jpg) Sergei Pavlovich Korolev (1906-1965) Chief Designer Of Soviet Spacecraft |
 Smithsonian Air and Space Museum Display, Sergei P. Korolev (Nestler 23R Slide rule) |
 Smithsonian Air and Space Museum Display, Wernher Von Braun (both Albert Nestler model Nr.37 Electro Slide rule) |
 NASA Ames. Historical Recruiting poster (c1950) of Cleve E Voss holding model of B-47, Douglas D-558-2, 6x6ft w.t. & slide rule NOTE: Poster recovered from Voss's wife. |
 BRL - Pilot Balloon Slide Rule - Mark IV.A REF |
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Scales (Railroad Track style divisions):
E = elevation |
BRL - Pilot Balloon Slide Rule - Mark IV.A. MET reference No.868.A Made in England by BRL - Weymouth, England Scan provided by Steve Seale Collection, Nashhville, Tennessee. This is a Mark IV.A Pilot Balloon Slide Rule manufactured in 1959.. It measures 63cm[24.75in] long, 6.3cm[2.5in] wide and 12mm[0.5in] thick. The printed scales are engraved in the plastic faces. The slide rule has 4 captive cursors that ride in slots on the top and bottom edges. Each can be moved independently of one another. Steel knobs at both ends of the slide facilitate movement of the slide. These were made for and used by UK Government agencies, and not individuals. The Met.(meteorological) Office of the United Kingdom designated at least 6 different Pilot Balloon slide rule models. The first model in appearing 1915 made of wood by J.J. Hicks with two slides and introduction of the final, MK 5 model in the Late 1960's. see www.pilotballoon.com for more detailed information on the Mark IV.A |
 Blundell-Harling - Pilot Balloon Slide Rule - Mark 5 ISRM 13.06.20.01 |
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Scales:
E = elevation |
Blundell-Harling - Pilot Balloon Slide Rule - Mark 5. MET reference No. 29550 Made in England by Blundell Harling Ltd - Weymouth, England Original owner was a residant of New Zealand and used it in Antartica, most likely working out of the Campbell Island Station. This is a Mark 5 Pilot Balloon Slide Rule manufactured around 1968. It measures 63cm[24.75in] long, 6.3cm[2.5in] wide and 12mm[0.5in] thick. The printed scales are engraved in the plastic faces. The slide rule has 4 captive cursors that ride in slots on the top and bottom edges. Each can be moved independently of one another. Steel knobs at both ends of the slide facilitate movement of the slide. These were made for and used by UK Government agencies, and not individuals. The Met.(meteorological) Office of the United Kingdom designated at least 6 different Pilot Balloon slide rule models. The first model in appearing 1915 made of wood by J.J. Hicks with two slides and introduction of the final, MK 5 model in the Late 1960's. see www.pilotballoon.com for more detailed information on the Mark 5.
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 ISRM - GE Space Propulsion |
GE Space Propulsion Calculator Made in USA - GE Flight propulsion Laboratory Front Scale: Beam Power, Thrust, Propellant consumption, Specific Impulse, Exhaust velocity Rear Scale: Planetary data and constants,  Instructions |
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 REF Aristo 80123 Martin Space Rule 1962 |
Aristo 80123 Martin Space Rule 1962 Made in Germany by Aristo for Martin Marietta Space Systems, Colorado Front Scale λ, K4, K3, K2, K1 [ Ispsec, K0, %Wpr, C ] D, K', %Wd Back Scale (no slide, uses hairline): (ε)ecc, Va, ha,hm, τ,V1, V2, Rj, γBo, TF, Ha, hc Well: Planet, Escape Velocity (fps), Radius(st. mi.) Slide Back: V3, Time of Travel (years), (Ra/Re) Archive - Scan provided by Rod Lovette Collection, UK. |
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 REF - Space Vehicle Pocket Designer for Three Stage Rockets |
Space Vehicle Pocket Designer for Three Stage Rockets Made in USA by the Martin Company (1959) Front Scale: Planetary Orbits, Velocity, Weight Index (Vacumm Specific Impulse) Courtesy Of Paul Ceruzzi, National Air And Space Museum |
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G.Peach System Temperature (TMOON) Slide Rule Made in UK/Australia - Designed and built By Gareth Peach,G7SLL, GSFDE Front Scale Ts °K [ dB Ao-An, db An-Aa ] Ts. To, Tn Construction: Laminated Traffolyte engraving material glued to an off-cut of 1/8" thick aluminium sheet material rough sawn to size. Archive - Scan/history provided by Gareth (Gary) Peach Gary, a British Scientist in Berkshire, designed this custom one-of-a kind slide rule to calculate the Temperature of the Moon (TMOON) during the exciting opening moments of the first lunar soft landing of the NASA spacecraft "Surveyor 3" in 1967. Surveyor 3 was the second spacecraft of the Surveyor series to achieve a lunar soft landing. The sliderule was used on a day to day basis to calibrate the radio telescope. Gary had been employed at the Tidbinbilla Tracking Station, on the Deep Space Instrumentation Facility 42 (DSIF 42, later known as DSN 42), ACT, Australia, as a Space Tracking Technician for the MSN 42 Apollo mission, in 1969. He was employed there from 1964 until 1973. Some of Gary's duties at Tidbinbilla in his own words.
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Pickett N600-ES Log Log Duplex - Buzz Aldrin Apollo 11 Made in USA - Flown to to the moon July 20, 1969 Front Scale LL1+.01/-.01, A [ B, ST, T T, S Cos, C ] D, DI, K Back Scale LL2+.1/-.1, DF [ CF, Ln, L, CI, C ] D, LL3+1/-1 This is a scan of the actual slide rule that was taken to the moon by astronaut Buzz Aldrin on July 20, 1969. It was sold at a Heritage Auction Galleries on September 21, 2007 and brought $77,675.00 from a serious collecter. His letter of authentication is shown. |
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 K&E N4083-3S Log Log Duplex Vector ISRM 09.10.27.01 
 Vern with a Saturn 1B (1969) and with Mike Konshak(2009) shown donating his personal slide rule to ISRM. |
K&E 4083-3 Log Log Duplex Vector S/N 485861 Made in U.S.A. Front Scale: Note: 5,10, 20 div/deg L, LL01, LL1, A [ B, T Cot, ST, S Cos ] D, Th, Sh2, Sh1 Back Scale LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2 Donated by Vernon Estes, Canyon City, Colorado.. Founder of Estes Industries who made the first safe black powder rocket motors in 1958 used by members of the newly formed National Association of Rocketry (NAR) . Vern purchased this slide rule in downtown Denver, Colorado in 1948 when he was in his 3rd year at Westminster Union High School. He used it for advanced math classes in high school, then later at Central College in McPherson, Kansas. He later founded Estes Industries which began his career in model rocketry. He says "my trusty slide rule was an indispensible companion". Based on his own experiences, he offered slide rules (see the Pickett 120) in his sales literature (circa 1964) to help young rocketeers (of which the curator of ISRM was one). Vern engraved his name on the slide rule so it would not get mixed up with his brother Earl Estes' slide rule, who bought his at the same time and later used it in his engineering career at Hughes Aircraft. |
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 REF Post 1462H PostTrig |
Post 1462H - PostTrig Made in Occupied Japan by Hemmi Front Scale LL0, LL00, A [ B, K, L, C ] LL3, LL2, LL1 Back Scale T, DF [ CF, CIF, CI, C ] D, S, T
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 REF V2 Rocket Ballistic Ranging Slide Rule  REF V2 Rocket at Pennemünde Note from ISRM curator, Mike Konshak, who is certified to build and fly high powered rockets: On the V-2 Rocket slide rule, all the scales are a variation of High vertical climb (maximum altitude), maximum range, burn closing speed. The V2 ballistic missile would shut off its motor at some point in its flight (burn closing speed) which was the maximum velocity at that point, which was determined by it s inertial guidance system. This would vary based on the desired range. At that point it went from the boost phase to the coast phase and begin slowing down due to parasitic drag and fell (still very fast) to its intended target. It was was not very accurate as it only went in the compass direction it was told to go. Full cutoff determined the range. This slide rule was not very different from other artillery calculators. |
V2 Rocket Ballistic Ranging Slide Rule - c1942 Made in Germany - Heeresversuchsanstalt Peenemünde (Army Research Center Peenemünde) Scales: Interpretation provided by Dr. Klaus Schug, as follows: From distance from Pennemünde to London is about 950 KM or almost 600 miles. This would be the Maximale Reichweite = 950 KM. Its maximum vertical height was between 50 to 60 miles (80 to 95 KM) for long-range targets. This would be the senkrechte Steighöhe = say 90 KM. I. zur senkr Steighohe - Vertical height in meters. Using 9.0 or 90,000 meters = 90 KM as the heigth for reaching London from Peenemünde to London II. zur Maximale Reichweite - Using 90 KM (9x10*4) on scale I , then scale II would read about 7000 kg/m*2 = Ballistische belastung = 5163.2 lb.ft of load or stress on the rocket III. senkrechte Steighohe - Looks like this scale was only for very short distances up to 80 KM using the top of scale IV as the distance desired and then looking at III to see how high up the rocket had to go to reach the distances on the top of scale IV. IV. Maximale Reichweite - using this scale with III gave the maximum distance for the height in scale III. V. zur max. Reichw. - Using the bottom of the scale, scale V, to hit longer distances, say 950 KM to hit London, yields on scale V. VI. Brennschlussgeschwindigkeit - Yields a end of burn velocity 900 m/sec to reach London or a target at 950 KM. Archive - Image from Pennemünde Museum |
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 REF A4D Skyhawk Computer Mil-C-15794 
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A4D Skyhawk Computer Mil-C-15794 Made in USA - Alegheny Plastics. Owned by Astronaut Paul Weitz B.Sc., Aeronautical Engineering, Pennsylvania State Univ.,1954; M.Sc., Aeronautical Engineering, USN Postgraduate School,1964; Received Naval commission and served a year at sea before entering flight school and receiving pilots wings in 1956. Remained with the USN, serving in various capacities until selected by NASA in 1966. 1973, CMP of the first NASA space station mission where he assisted in the repair of the Skylab Orbital Workshop performing 2 EVA's during his near one month stay. 1983, CDR of the maiden voyage of the Space Shuttle Challenger which featured the first EVA's of the Shuttle program. Following STS-6, named Deputy Director, Johnson Space Center where he remained until retirement from NASA in May 1994. 
 Astronaut Paul Weitz on Skylab 2 at the controls of the Apollo Telescope Mount. Notice the circular slide rule mounted at the top of the panel. |
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 CPU-48/P B-47/B-52 Air Navigation Bombing Computer ISRM 13.06.26.01 
 B-47 Stratojet, B-52 Stratofortress, CPU-48/P Kit |
CPU-48/P B-47/B-52 Air Navigation Bombing Computer (1964) 8 inch diameter. Made in USA by Felsenthal Instruments for the U.S. Government. Fesenthal MFR's No. FAA-38A. FSN-6605-994-4946 Used for computing air navigation and bombing solutions in the USAF, specifically for the B-47 and B-52 jet bombers. See instructions for scales. Donated By Robert Snyder in memory of his father Earl Snyder
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 B-24 (D,E,G,H,J) Bomber Load Adjuster Slide Rule (1944) ISRM 12.08.05.01 
 Lyle Wells and wife Antoinette in Belgium, 1946 |
B-24 (D,E,G,H,J) Bomber Load Adjuster Slide Rule Made in USA by Cox & Stevens for the U.S. Government. Reference: PB4Y-1. For Aircraft Tail Number 49085 The Consolidated-built heavy bomber was produced in more numbers than any other U. S. World War II combat aircraft. Over 18,000 of these versatile four-engine bombers were built for the U.S. Army Air Corps, Navy, and Allies from 1939-1945 by Consolidated plants in San Diego and Fort Worth, by Henry Ford at Willow Run, MI, and by North American at Dallas. Donated by Lyle Wells of Henderson, Nevada Lyle Wells was born May 26, 1923. He married his wife, Antoinette, in 1946 in Belgium while he was in the Army. They were married for 65 years and have one son. Lyle was drafted on March 12, 1943 and served until 1953 spending most of his time in France, Belgium and Germany as a master sargeant in the 515 engineer outfit. After returning to the United States, Lyle was an operating engineer for over 20 years and also owned two businesses. He was a recreational pilot and remembers needing to have a slide rule in order to obain his pilot's license. Although he was only able to go to school until the 8th grade before having to earn a living. Lyle remembers that his wife, who spoke 5 languages, was always better than him with the slide rule. At 89 years of age as of 2012, Lyle rides his mountain bike an average of 10-15 miles per day and the only pills he takes are vitamins. (Biography contributed by Donna Silva of Wishing Well Glass. |
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 REF B-25J Load Adjuster Slide Rule 
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B-25J Load Adjuster Slide Rule Made in USA - Cox and Stevens Aircraft Co.Mineola, NY Reference PBJ-1J. The North American B-25 was among the famous twin engine medium bombers used during World War II. It was the most widely produced American twin engine combat aircraft, with approximately 10,000 produced, in a total of 8 major models. No doubt, part of its heroic stature derives from its namesake, the outspoken Gen. Billy Mitchell who proved once and for all that bombers could destroy targets, and that wars would nevermore be decided only on land or sea. The B-25 achieved worldwide fame on April 18, 1942. Sixteen B-25's, under the command of Lt. Col. James Doolittle, were launched from the aircraft carrier Hornet in a daring raid on five Japanese cities including Tokyo, Osaka, Yokohama, Nagoya, and Kobe. Archive - Scan donated by Richard Davis, Las Vegas, Nevada, USA |
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 REF S-42 Sikorsky Pan Am Clipper Ship Load Adjuster Slide Rule |
S-42 Sikorsky Pan Am Clipper Ship Load Adjuster Slide Rule Made in USA - Cox and Stevens Aircraft Co.Mineola, NY The Sikorsky S-42 is regarded as the first truely American seaplane and was described as the "most beautiful aircraft of its time." Manufactured by the Vought-Sikorsky Aircraft Division of the United Aircraft Corporation in Stratford, Connecticut.. The aircraft first flew on March 30, 1934. A total of 10 aircraft were built. These were the first of the great Pan American Airways Clipper Flying Boats and the first true over ocean transport. 
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 Cox & Stevens C119/RQ4 Load Adjuster Slide Rule ISRM 17.12.17.09 |
Cox & Stevens C119/RQ4 Load Adjuster Slide Rule Made in USA - Cox and Stevens Aircraft Co.Mineola, NY Gift of James Pennell Collection The Fairchild C-119 Flying Boxcar (Navy and Marine Corps designation R4Q) is an American military transport aircraft developed from the World War II-era Fairchild C-82 Packet, designed to carry cargo, personnel, litter patients, and mechanized equipment, and to drop cargo and troops by parachute. The first C-119 made its initial flight in November 1947, and by the time production ceased in 1955, more than 1,100 C-119s had been built. Its cargo-hauling ability and unusual twin-boom design earned it the nickname "Flying Boxcar". Courtesy of Wikipedia 
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Pickett Model 100 Douglas Sky Rule - Rounded Braces Made in USA for Douglas Aircraft - Copyright 1952 Front Scale (A side)(Artwork #56) Dynamic Pres., Temp Rise [ Static Pres., Pres. Alt, Density Alt., C ] D, True Mach. TAIS Back Scale (B side) Impact Pres., Std. Temp., Pres. Alt. [ Temp. Venier, Pres. Alt. ] True Mach No., Dial Airspeed. ] Blank Gift of Ed Millis of Dallas, Texas |
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 REF Pickett Model 100 Douglas Sky Rule |
Pickett Model 100 Douglas Sky Rule Made in USA for Douglas Aircraft - 1952 Front Scale (A side) Dynamic Pres., Temp Rise [ Static Pres., Pres. Alt, Density Alt., C ] D, True Mach. TAIS Back Scale (B side) Impact Pres., Std. Temp., Pres. Alt. [ Temp. Venier, Pres. Alt. ] True Mach No., Dial Airspeed. ] Blank Archive - Herman's SR Catalogue |
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 BRL N52 Aviation Janus Series Duplex ISRM 14.07.22.03 |
BRL N52 Aviation Janus Series Duplex Made in England by Blundell Harling S1, A [ B, Ta, Tb, ST, S, C ] D, K, L. Back Scale: ICAN temperature, temperature conversion, altimeter correction, P&D alt.[ Temp., Air temp.,C1, Dens.alt., C ] D, SM, KM. Gift of Phillip Rodley of Upperhutt, New Zealand. 
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 The Technical - Aeronautical Slide Rule (all glass cursor) ISRM 17.05.02.36 |
The Technical - Aeronautical Slide Rule British Made - Wood with (all glass cursor) Front Scale (extended) 10inch // M, P, A [ B, P1, CR, C ] D, K, N \\ 27cm Back Scale: [ S, ST, T ] Back side windows Gift of Mike Weaver, United Kingdom |
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 The Technical - Aeronautical Slide Rule ISRM 14.07.02.01 |
The Technical - Aeronautical Slide Rule British Made - Wood with celluloid cursor frame Front Scale (extended) 10inch // M, P, A [ B, P1, CR, C ] D, K, N \\ 27cm Back Scale: [ S, ST, T ] Back side windows Gift of Ed Millis, Dallas, Texas |
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 AN-5837-1 Alititude Correction Computer - c1943 ISRM 11.11.11.06 |
AN-5837-1 Alititude Correction Computer - c1943 Made in USA under a 1943 USAAF contract by G. Felsenthal & sons, Chicago, Illinois. (Mfr's Part No. FAA-9) Note: Other known manufacturers of this device were Cruver Manufacturing Co. (Mfr's Part No. C1920) and J.B. Carroll Company of Chicago (Mfr's Part No. 101) Front Scale: Pressure Altitude at Ground in Feet, Mean Temperature (True Altitude in Feet, Indicated Altitude in Feet ) Back Scale: Instructions Label on box: "If in storage after Aug 15, 1948 this instrument to be tested and re-inspected before issue" Donated By Carlee Heit of Houston, Texas in memory of her late husband Ray Heit. One of many specimens in Ray's collection. 
Carton
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 REF Time Distance Computer Type D-4 USAAF - c1943 |
Time Distance Computer Type D-4 USAAF - c1943 Made in USA under a 1943 USAAF contract by General Luminescant Corp Note: Other known manufacturers of this device were Cruver Manufacturing Co. Front Scale: True Altitude, Air Temp, Press. Alt. (ETA, Air Speed ) Back Scale: Cal. Air Speed, Air Temp, True A.S. (presure Altitude, Density Altitude) 
Carton
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 Batori Dead Reckoning Computer Type B-23 - c1952 ISRM14.07.02.15 |
Batori Dead Reckoning Computer Type B-23 - c1952 Made in Switzerland by Batori Computer Company Inc., New York. Note: USA, France, Gr. Britain Pa. Pend. Front Scale: Miles, or. Altitude (Timer True Altitude, Air Temp, Press. Alt. ) (ETA, Air Speed )(presure Altitude, Density Altitude)) Back Scale: Wind direction ( drift, latitude, gal/lbs of Fuel) Gift of Ed Millis, Dallas, Texas 
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 Weems Dalton Dead Reckoning Computer (1932) Type E6B AN-5835-1 Military Version cWWII ISRM 10.12.12.02 |
Weems Dalton Dead Reckoning Computer - Type E6B AN-5835-1 Military Version made of Black Anaodized Aluminum Made in USA by Weems System of Navigation, Annapolis, Maryland, 1932. Invented by Philip Dalton, LTJG (1903 - 1941) United States Military Scientist Patent: 2,097,116  Philip Dalton BiographyFront Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale: Wind Correction Angle( True Heading ) Donated by the estate of James Robert Weber, Lafayette, Colorado
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 Fesenthal FAA-8 Dead Reckoning Computer (c1940-1944) (Type E6B) AN-5835-1 U.S. Army Version WWII ISRM 14.07.02.12 
 From Eyes of Artillery: The Origins of Modern U.S. Army Aviation in World War II (76MB PDF) by Edgar F. Raines, Jr. R.F. Cassidy, Lt. Col (Later Major) is mentioned throughout the text. Col. Cassidy (retired) was inducted into the 1988 Army Aviation Hall of Fame and later interviewed by Edgar F. Raines during 1991. |
Fesenthal FAA-8 Dead Reckoning Computer - (Type E6B) AN5835-1 Military Version made of Black Anodized Aluminum Made in USA by G. Fesenthal & Sons, cWWII Invented by Philip Dalton, LTJG (1903 - 1941) Patent: 2,097,116 Front Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale: Wind Correction Angle( True Heading ) Original owner/user (written on sleeve): R.F. Cassidy, Lt. Col. U.S. Army (See bio below) Gifted by the Ed Millis Collection, Dallas, Texas. 
Robert F. Cassidy graduated from West Point in 1939 and was later a 1st Lt. in the 38th Field Artillery Battalion.
In 1942, then CPT Robert F. Cassidy was designated as the principal air observer for the field testing of organic air observation for the Field Artillery with the 2nd Infantry Division competing with the Army Air Corps Observation School.
The outstanding success of the artillery air observation post in the competition resulted in the approval of the concept by the War Department.
Subsequently, Cassidy fought his way into the program at a time when regular Army officers, particularly West Point graduates, were being strongly advised by their superiors to avoid aviation as a "dead end street."
On completion of flight training, Cassidy established the tactical training part of the Liaison Pilot Course and was responsible for all tactical training until 1944.
He then transferred to the Eighth U.S. Army, where he was senior artillery aviation officer in the Pacific.
Later, as the senior aviator in the Department of Air Training at Fort Sill, Okla., from 1950 to 1951, Cassidy was primarily responsible for the smooth, efficient expansion of flight training from a rate of 100 pilots per year to 2,600 to meet the requirements of the Korea Conflict ? an astounding increase.
In 1951, he became the aviation officer in the Office of the Deputy Chief of Staff for Logistics on the Army Staff.
Because of numerous complaints from overseas field commanders regarding deficiencies in depot level supply and maintenance support, Cassidy proposed, prepared and successfully staffed a study on the transfer of all logistic support for Army aircraft from the Air Force.
As the action officer for the entire project from 1952 until 1955, during which time there was almost unanimous opposition by the Army General Staff, as well as the USAF staff, Cassidy was able to overcome the opposition by his tactful persuasion and numerous revisions.
By mid-1955, a memorandum of understanding was approved; resulting in the independent depot support structure for Army aviation.
Cassidy was also the logistic member of a team that did the studies and sold the Army and the Joint Chiefs of Staff on expanding the experimental five-company cargo helicopter program to 12 battalions, and then procured the H-21 and H-34 helicopters to fill them.
From 1957 to 1962, he served as the chief of the Aviation and Airborne Division, Materiel Development Section of the U.S. Continental Army Command, where he expertly guided the development and user tests for the H-37 and UH-1A through D model helicopters, and the CV-2A Caribou and the OV-1 Mohawk aircraft for the Army?s growing aviation arm.
In his final assignment as assistant commandant of the U.S. Army Aviation School at Fort Rucker from 1963 to 1965, this master aviator judiciously directed the rapidly increasing training program, including the expansion of the Warrant Officer Candidate School and the Army aircraft maintenance program to support the growing conflict in Vietnam.
A true aviation pioneer, superb trainer and logistician, and a major contributor to the success of Army Aviation from its inception, Cassidy is richly qualified to join the Army Aviation Hall of Fame.
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 Felsenthal FNA-8 Dead Reckoning Computer (Type E6B) AN-5835-1 Military Version cWWII ISRM 18.04.06.143 |
Felsenthal FNA-8 Dead Reckoning Computer (Type E6B) AN-5835-1 Military Version made of Black Anodized Aluminum Made in USA by G. Felsenthal & Sons. F.S.S.C. No.88-C-1120. Contract No.a(s)3127 Invented by Philip Dalton, LTJG (1903 - 1941) United States Military Scientist Patent: 2,097,116 Front Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale: Wind Correction Angle( True Heading )
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 Stanley U.S. Army Air Forces (Dalton) Dead Reckoning Computer (c1935) Type E6B Military Version WWII ISRM 14.07.02.16 |
Stanley (Dalton) Dead Reckoning Computer - Type E6B U.S. Army Air Forces Version made of Brushed Stainless Steel Made in USA by Stanley Manufacturing Co., Annapolis, Maryland, Purchase Order No. 42-18801-P, Specification No. 94-27892 Invented by Philip Dalton, LTJG (1903 - 1941) Patent: 2,097,116 Front Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale: Wind Correction Angle( True Heading ) Gifted by the Ed Millis Collection, Dallas, Texas. |
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 Fesenthal U.S. Army Air Forces (Dalton) Dead Reckoning Computer (c1935) Type E6B Military Version WWII ISRM 14.07.02.13 |
Fesenthal (Dalton) Dead Reckoning Computer - Type E6B U.S. Army Air Forces Version made of Brushed Stainless Steel Made in USA by Fesenthal & Sons, Chicago. Purchase Order No. 42-18253-P, Specification No. 94-27892 Invented by Philip Dalton, LTJG (1903 - 1941) Patent: 2,097,116 Front Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale: Wind Correction Angle( True Heading ) Gifted by the Ed Millis Collection, Dallas, Texas. 
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 Weems Dalton Dead Reckoning Computer (c1950) Type E6B Commercial Version Post WWII ISRM 11.11.11.07 |
Weems Dalton Dead Reckoning Computer - Type E6B Commercial Version made of Brushed Aluminum Made in USA by Weems System of Navigation, Annapolis, Maryland, Post WWII Invented by Philip Dalton, LTJG (1903 - 1941) Patent: 2,097,116 Front Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale: Wind Correction Angle( True Heading ) Donated By Carlee Heit in memory of her late husband Ray Heit. One of many specimens in Ray's collection 
Instructions (8.51MB PDF)
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 Weems Dalton Dead Reckoning Computer (1959) Type E6B AN-5835-1 Commercial Version ISRM 14.07.02.14 |
Weems Dalton Dead Reckoning Computer - Type E6B AN-5835-1 Commercial Version made of White Plastic Made in USA by Weems System of Navigation, Annapolis, Maryland, 1959. Invented by Philip Dalton, LTJG (1903 - 1941) United States Military Scientist Patent: 2,097,116 Front Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale: Wind Correction Angle( True Heading ) Gifted by the Ed Millis Collection, Dallas, Texas. 
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 Maurice Damien AAF40-4 Aviation Flight Computer REF |
Maurice Damien AAF40-4 Aviation Flight Computer Made in France Front Scale (extended): Distance (Time (Minutes), Time (Hours), Temp Air, Altimeter Correction Back scale: Course and Wind Drift Correction Note: Photo printed using 'Photal Process' Scan By Gonzalo Martin Collection, photocalcul.com
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 S217 Soviet-LFAI Aviation Navigator's |
Soviet Aviation Navigator's Made in USSR Scales: The Corrected height, Height and speed on the device, Distance, Radiuses of a turn - distances - heights |
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 S531 Soviet-LFAI Aviation Navigator's |
Soviet-LFAI Aviation Navigator's Made in USSR Scales: The Corrected height, Height and speed on the device, Distance, Radiuses of a turn - distances - heights |
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 American Airlines Navigational Computer Type "B" ISRM 10.03.01.04 |
American Airlines Navagitional Computer Type "B" Made in USA by American Airlines, Inc. Serial Number B-11139, 1941, rev 1942 Front Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale: Wind Correction Angle( True Heading ) Original Owner: Charles H. Eaton (1913 - 1982) used this slide rule from 1949-1972 as a professional pilot and aircraft engineer. He had his first airplane, a Curtis Junior, at 18 years old. Graduated in aeronautical engineering from California Polytechnic Institute in 1932. In the 1930s he flew for Paul Mantz Air Service, among others, and was a flight instructor in WW II, logging 2600 hrs teaching precision aerobatics. After the war he supervised conversion of military aircraft to civilian use, flew for American Airlines, Lockheed Aircraft, and Vinnell Corp, a world-wide heavy construction firm. In retirement he built two experimental airplanes. Donated by Prof. Robert C. Eaton, Univ of Colorado, in memory of his father. 
 12.1MB PDF |
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 Jeppesen Computer Model R-1 ISRM 10.09.15.02 |
Jeppesen Computer Model R-1 Made in USA by Jeppesen, Denver Colorado, 1955 Copyright 1955 by Ray Lahr, Patent # 2,528,518 Front Scale: Distance Naut Miles, Gal.True Air Speed (Time Min, Hrs, Density Altitude, Air Temp, True Altitude, Pressure Altidue) Back Scale: Wind Correction Angle( True Heading ) Donated by the estate of James Robert Weber, Lafayette, Colorado |
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 Whitehead Holding Pattern Computer ISRM 10.03.01.06 |
Whitehead Holding Pattern Computer Made in USA by Whithead, 2900 N. Keystone ST., Burbank, California Front Scale: Inbound Holding Course, Outbound Course Back Scale: Inbound Holding Course, Outbound Course Original Owner: Charles H. Eaton (1913 - 1982) Donated by Prof. Robert C. Eaton, Univ of Colorado, in memory of his father. |
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 Safetech E6-B Flight Computer Model FDF-60 ISRM 09.02.01.01 |
Safetech E6-B Flight Computer Model FDF-60 Made in USA by Safetech, Newtown, PA, c1977-1986 Front Scale Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale Wind Correction Angle( True Heading ) Slide: Sectional ands Wide Area Chart Scales Owner: Mike Konshak, Private Pilot with Instrument Rating 
 3.39MB PDF |
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 Fesenthal MK-8-B Flight Computer Computer ISRM 15.11.03.04 
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Fesenthal MK-8-B Flight Computer Computer (1964) 4-1/2 inch diameter. Made in USA by G. Felsenthal & Sons Inc for the U.S. Navy. Fesenthal MFR's No. FNA-314. Stock No. R88C1152-000-000. Used for computing air True Air Speed, range of flight (time and Distance. A simplified variation of the Dalton Dead Reckoning Computer Donated By Randy Rash in memory of his father Charles (Chuck) Elmer Rash (1918-1989) of Portland, Oregon.
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 Air Force Type MB-2A Air Navigation Computer ISRM 09.02.01.01 |
Air Force Type MB-2A Air Navigation Computer Made in USA by JB Carroll Co. Chicago, c1949-1956 4.25 inch Diameter, Patent USA 2,528,518 (1950) and 2,767,919 (1956) Front Scale Cal. Air Speed, True Air Speed, Temp Rise, Mach Number (Pressure Altitude, Indicated Air Temp ) Back Scale Course, Reative Wind ( wind , Corrected alt, Minutes, Hours, Wind, Drift, altitude ) Original Owner Stationed at Souix City Air Base, Iowa. Donated by Jason McHenry, Tucson, Arizona 
 5.91MB PDFIncludes insert on atomic bomb survival. |
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 Aero Products Research CR-6 (Aviation) Computer ISRM 11.11.11.08 |
Aero Products Research CR-6 (Aviation) Computer Made in USA by Aero Products Research, Los Angeles, CA. 6 inch Diameter, 5 disks + Cursor. Copyright 1974 Front Scale Cal. Air Speed, True Air Speed, Temp Rise, Mach Number, TAS Knots, Speed/Fuel Conversions (Indicated Air Speed, CAS, Pressure Altitude, Indicated Air Temp ) Back Scale True Air Speed Index, Magnetic Course, Relative Wind( True Course ( Wind Drift )) Donated by Carlee Heit, Houston, Texas, in memory of Ray Heit. Ray Heit Collection.  8.4MB PDF |
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 Goble Airline Pilots Flight Computer ISRM 14.07.02.28 |
Goble Airline Pilots Flight Computer Made in Montauk, Li.I., New York (June 1946) Front Scale: Cal. Air Speed, True Air Speed, Temp Rise, Mach Number, TAS Knots, Speed/Fuel Conversions (Indicated Air Speed, CAS, Pressure Altitude, Indicated Air Temp ) Back Scale: True Air Speed Index, Magnetic Course, Relative Wind( True Course ( Wind Drift ) Gift Of Ed Millis, Dallas, Texas. |
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 REF - Felsenthal PT-3 Aviation Computer |
Felsenthal PT-3 Aviation Computer Made in Chigao, IL (1970) Front Scale: Cal. Air Speed, True Air Speed, Temp Rise, Mach Number, TAS Knots, Speed/Fuel Conversions (Indicated Air Speed, CAS, Pressure Altitude, Indicated Air Temp ) Back Scale: True Air Speed Index, Magnetic Course, Relative Wind( True Course ( Wind Drift )) Archive - Scan donated by Bob Denny |
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 REF W&G Aerial Dead Reckoning Computer R.A.A.F. Mk 1 |
W&G Aerial Dead Reckoning Computer R.A.A.F. Mk 1 Made in Australia by White & Gillespie Front Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp ) Back Scale: Wind Correction Angle( True Heading ) Scan provided by Cyril Catt. Australia |
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 Aeronav Instruments Private Pilots Flight Computer Model-I |
Aeronav Instruments Private Pilots Flight Computer Model-I Made in the United States, in New York by Whitehead & Hoag, Newark, New Jersey Front Scale: True Air Speed [ Indicated Air Speed, Pressure Altitude ] Air Temp ( Distance, Time Min, Hrs) Back Scale: Sectional Chart Scale, Ground Speed (Wind Correction Angle, Drift, True Heading ) Gift of Ed Millis, Dallas, Texas. |
