Military Slide Rules

USAF Test Pilot School Edwards AFB slide rule on crest

Test Pilot Student and Instructor at TPS School, Edwards AFB c1952-1954

Test Pilot calculating flight profile at TPS School, Edwards AFB c1956

Alex E. S. Green Slide Rules

REF Green Ship Length Computer	Green Ship Length Computer Made in USA by Alex. E.S. Green during WWII For determining the size of Japanese ships, used in conjunction with the B-29 Gun sights. This slide rule was used to find the elusive Japanese battleship Yamato
REF Green Flight Engineers Computer	Green Flight Engineers Computer Made in USA by Alex. E.S. Green during WWII. For maximizing the fuel range of B-29 Gun during long over-water missions. Created after the B-29 crew that found the Japanese fleet ran out of gas and had to land in Xian, China

Government Issued Slide Rules

ISRM K&E Short Base Triangulation Rule USArmy

Initials: USBR

K&E Short Base Triangulation Rule US Army Made in U.S.A. for the US Army - 20" long Front Scale: Aux Angle "A", Mils [ Vertex Angle "t" mils, base "b" ] Range "R" Back Scale: [ Vertex Angle "t" mils, base "b" ] Cursor: 2 hairlines Meters/Yards

REF K&E M4 Graphical Firing Table Slide Rule - 1943

ISRM Geo. W. Richardson Ballistic Slide Rule Model of 1917

Geo. W. Richardson Ballistic Slide Rule Model of 1917 Made in USA by Geo. W. Richardson for J. H. Weil & Co. Front Scale: A (Yards or Meters) [ B (Mils) C ] D (Yards or Meters) Back Scale: [ B (Mils) C ] Note: This was not designed for a sliding cursor

C01 USSR Artillery Ranging	USSR Soviet Artillery Ranging Made in USSR Front Scale tg, tg, 10K [Sin1-00, Sin0-10, 10K] Tables Archive Photo - No longer in collection
REF Japanese Gunnery Correction Slide Rule	Japanese Gunnery Correction Slide Rule Made in Japan - 1936 pre WWII Front Scale tg, tg, 10K [Sin1-00, Sin0-10, 10K] Tables Archive - Image from Duke University, Gessler Collection A combination slide-rule/nomograph forcalculating ballistics corrections for temperature, barometric pressure, vertical and horizontal wind and muzzle velocities. Probably used in land-based Army operations in China. Weighing 16 pounds it measures 30x38x2.5 cm. It has a thick wooden base, thick bronze or copper dovetail slides (with matching serial numbers 26), and white brass faceplates. Three sliding scales are side-by-side, with a fourth sliding scale inserted in the center slide.
REF V2 Rocket Ballistic Ranging Slide Rule REF V2 Rocket at Pennemünde	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. 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. Archive - Image from Pennemünde Museum
REF B-25J Load Adjuster Slide Rule	B-25J Load Adjuster Slide Rule Made in USA - Cox and Stevens Aircraft Co.Mineola, NY Also for PBJ-1J Archive - Scan donated by Richard Davis, Las Vegas, Nevada, USA
ISRM U.S. Military 76mm Howitzer Artillery Set	U.S. Military 76mm Howitzer Artillery 2 SR set Made in USA - 1952 Scales: Range, Elevation, Drift, etc
ISRM Air Force Type MB-2A Air Navigation Computer	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 PDF Includes insert on atomic bomb survival.
ISRM AN-5837-1 Alititude Correction Computer - c1943	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
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
ISRM Dalton Dead Reckoning Computer Type E6B AN-5835-1 Military Version cWWII	Dalton Dead Reckoning Computer - Type E6B AN-5835-1 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 Biography Front 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 James Robert Weber (1928-2010) Served in the U.S. Air Force, then joined Martin Marietta in Colorado and worked on the ICBM project. In 1965 he was hired on as pilot and technician for National Center of Atmospheric Research (NCAR) flew many flights using a Cessna 172 and a T-28 into storms as part of the National Hail Research Experiment (NHRE), and later the Microscale Meteorology Division. Later James was responsible for maintaining NCAR's link to the University Satellite Network which was connected to the Woods Hole Oceanographic Institution and other U.S. research centers. He retired from NCAR in 1993 after 28 years of service. He is survived by his wife Lois Anne.
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
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
S552 Soviet-LFAI Artillery	Soviet-LFAI Artillery Made in USSR Front Scale: 1:50000M, 1:25000M // β, N² [Sin, S&T, Tg, N ] NQ+1, L Back Scale: [ Sin, S&T, Tg, N ] Back: Position and spotter formulae Multiple hairlined Cursor
ISRM LFAI Soviet Military Dual Circular	Soviet Military Dual Circular - 1957 Made in USSR by LFAI, Leningrad Left Scale: 10000 meter (Sin) Right Scale: 10000 meter (Tg) Back: Position and spotter formulae Actual application unknown at this time
S495 Lawrence 505_U.S. Navy	Lawrence 505_U.S. Navy Made in USA - Peru, Ind. (Lawrence) Painted wood body Front Scale A [ B, CI, C ] D, K Back Slider [ S, L, T ] Back: Conversion Chart
S189 American Blueprint Military Rule	American Blueprint Military Rule Made in USA - by K&E for American Blueprint (Military contractor) Front Scale Opposite Angle Deg, Mils [Apex Angle Mils, Deg, CI,C] D,A Back slider: [Tan, Sin-Tan, Tan ] Back: Geometry formulae TM 6-240 Manual 3.35MB Pdf Field Artillery Military Slide Rule
ISRM Pickett Model 14 US Military	Pickett Model 14 US Military Made in USA Front Scale LL1+/-, LL2+/-, A [ B, T, ST, S, K,  C ] D, LL3+/-, LL4+/- Back Scale Opposite angle Degrees, Mils [ Apex angle, Tan, Sin-Tan, Sin, Base C ], Distance D, A
ISRM Union Instruments MIL-C-4318-B Type A-1	Union Instruments MIL-C-4318-B Type A-1 Made in USA by Pickett Front Scale L, A, DF [ CF, CIF, T, S, C ] D, DI, K Back scale Ground Size Meters, Feet, Ground Speed, [Image size, Cycling Time, Focal Length ] Altitude USAF Manual 8.69Mb
P232 Pickett N700-T USAF Aerial Photo Type A-2	Pickett N700-T USAF Aerial Photo Type A-2 Made in USA for the USAF Front Scale L, A DF [ CF, CI, T, S, C ] D, DI, K Back Scale Ground Size Meters, Feet, Ground Speed, [Image size, Cycling Time, Focal Length] Altitude USAF Manual 8.69Mb
ISRM USAF Type A-1 Aerial Photo	USAF Type A-1 Aerial Photo - c1950 Made in USA for Astrodyne by Precision Scale Co. (founded by Art Eckel) Front Scale L, A, DF [ CF, CIF, T, S, C ] D, DI, K Back scale Ground Size, Ground Speed, [Image size, Cycling Time, Focal Length ] Altitude USAF Manual 8.69Mb
REF Military Attack Computer	Military Attack Computer Made in USA Front Scale Air Speed, Lead angle, Time, Distance, etc. Archive - Not in collection