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![]() 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 |

![]() 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 |

![]() 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 |

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K&E M4 Graphical Firing Table Made in U.S.A. for the US Army, 1943 - 18-1/4" long Link - Clark McCoy Archive |

![]() 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 Military Attack Computer |
Military Attack Computer Made in USA Front Scale Air Speed, Lead angle, Time, Distance, etc. Archive - Not in collection |
![]() 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 PDFIncludes insert on atomic bomb survival. |
![]() 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 PdfField 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 |
![]() 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 |
![]() 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 |