Aircraft Clock, 8 Day, Type A-13A-1, USAF 1965 Allison which appeared on the engineers

which appeared on the engineers panels of the Boeing B-50 Bomber and KC-97 Stratotanker

This is a Cabin Altitude and Differential Pressure Indicator as used in USAF's Cold-War-era Fighter/Interceptor F-89 B Scorpion

up to one hour

The remaining pages describe the aircraft of each nation's air services

Aircraft Clock, 8 Day, Type A-13A-1, USAF 1965 Allison which appeared on the engineersHere is a fine specimen of a mechanical 8 day Aircraft Clock Type A 13A 1, made by Waltham Precision Instrument Company, part number 40091 with a manufacturing date of May 1965 for an order by the US Air Force. The A 13A 1 was used in a number of different aircraft during the 1960's and 1970's, including bomber B 52 Stratofortress, fighters F 100 Super Sabre and F 86 Sabrejet, and the trainer T 33. From the Waltham Clock website: With one hour elapsed