Wheel and Flap Position Indicator, AN5780-T3, US Navy R88I-1888-000 B-26 The photos show the first

The photos show the first two pointers

as Federal Stock number R88-I-2385-100 for aircraft of the US Navy both during and after WWII

and the Axis nations

5 inch circular slide rule

This is an original WWII-era pilots instruction manual covering instrument flying Technique in Weather

Wheel and Flap Position Indicator, AN5780-T3, US Navy R88I-1888-000 B-26 The photos show the firstThis is a late WWII era and Post WWII Wheel and Flap Position Indicator, Type AN5780 T3, as used in aircraft of the US Navy with either tricycle landing gear (i. e., nose wheel) or tail wheel configurations. Instrument #R88I 1888 000 was used across numberous US Navy aircraft, including F4U Corsair, F8F Bearcat fighters, F9F Cougar jet fighter, AD 1 Skyraider, and others. When the individual wheels are down, the rotating display for each wheel shows