Rate of Climb / Vertical Airspeed Indicator Pioneer 1625-1Q-C1 TBM Avenger Reference Number 41-7954

Reference Number 41-7954

According to the Graphic Survey of Radio And Radar Equipment Used By The Army Air Forces dated July 1945:

with a service stamp of Oct 1968

Here is an electrical Directional Gyro/Turn Indicator marked AF USARMY (Air Forces US Army)

Here is a WW2-era Boost Pressure Gauge

Rate of Climb / Vertical Airspeed Indicator Pioneer 1625-1Q-C1 TBM Avenger Reference Number 41-7954Here is a WW2 vintage Rate of Climb (Vertical Airspeed) Indicator, made by Pioneer, similar to those used in the US Navy's PBY 5A Catalina. It was for aircraft with shallow slow climb descent speed i. e. maximum 2000 ft minute. The pointer is calibrated by turning the screw in the lower left corner. The inside of the glass could use some cleaning. Measures 3. 25 inches diameter and 4 inches deep.