Gyro Horizon, Pneumatic, FL22427, Luftwaffe Wendehorizont PV-1 Ventura and to what degree

and to what degree

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The pendulum is geared to a pointer which revolves in a limited arc on a dial calibrated through the range from zero (level) to 30 degrees nose up or down

part number 1556-2K-A

Gyro Horizon, Pneumatic, FL22427, Luftwaffe Wendehorizont PV-1 Ventura and to what degreeHere is a WW2 era German pneumatically powered "Wendehorizont" Gyro Horizon FI. 22427, made by Askania (see "Hersteller: bxx", bxx was the code for Askania). This Wendehorizont was used in aircraft of the Luftwaffe such as twin engine night fighters Messerschmidt ME 110, 210, and 410, and bombers Junkers JU 88, Heinkel HE 111, and Heinkel HE177 Greif. The knurled rim around the glass lens can be rotated, which cages (Fest) or releases (Los) the gyro.