Tachometer, Chronometric, Type C-7, WWII, Air Corps US Army Bf-109 The rubber cushion inside of

The rubber cushion inside of the case has deteriorated and softened

by showing increments of quarter fractions from 0 degrees (Up) to fully extended 45 degrees (Down)

This appears to be a 1930's-era Compass and Directional Indicator

Once the aircraft reaches 5000 Meters

while the right dial selected the number of bombs to be released at a time

Tachometer, Chronometric, Type C-7, WWII, Air Corps US Army Bf-109 The rubber cushion inside ofHere is an example of the WWII era Chronometric (i. e. mechanical) Tachometer, Type 7, as used by early single engine aircraft of the Air Corps US Army. According to the US Army Air Force Maintenance Interchangeability Chart dated Feb 1945, the C 11 tachometer was used in fighters P 40 Warhawk (E N), early versions of the P 47 Thunderbolt, and P 51 Mustang, dive bombers A 35 Vengeance and A 36 Apache, and transports UC 61 and UC 64A. This tachometer