Wheel and Flap Position Indicator, Type A-3 HUP The dial measures 3

The dial measures 3

77 hours) before completely turning over

and a cover which probably affixed to another housing assembly

Some slight fraying on the spine but all pages appear to be intact

When you’re done with the top timer press the left button again

Wheel and Flap Position Indicator, Type A-3 HUP The dial measures 3This is a WWII era Wheel and Flap Position Indicator, Type A 3, as used in aircraft of the US Army Air Force and US Navy with tail wheel landing gear. According to the Maintenance and Interchangeability Chart dated Feb 1945, the A 3 indicator was used in early versions of fighter P 47 Thunderbolt (see image of the P 47 instrument panel from its flight manual dated 1943) and transport C 46 Commando. It was also used in the fighter P 40F Warhawk