Aircraft Clock, Elapsed Time USAF USN MS28020LI Fairey Battle stub Axle diameter

stub Axle diameter

the fuel quantity displayed on the main photo here is 33

25in diameter and 4in deep

So it is possible that there is some connection there

This is an original Cold War-era US Navy Flight Manual for the aircraft-carrier-based Grumman Cougar F9F-6 and F9F-6P Jet Fighter

Aircraft Clock, Elapsed Time USAF USN MS28020LI Fairey Battle stub Axle diameterThis is an original Cold War era Elapsed Time Clock, made for US military aircraft applications by Elgin (MS28020LI), and as used in aircraft carrier based Grumman Cougar F9F 5 and North American Fury FJ2 Jet Fighters. See photo of the cockpit of the F9F 5 from its flight manual dated 1955, showing the location of the clock. The clock winds and keeps time a few minutes. Has not been examined for accuracy or full functionality. The dial is 1 7 8 inches