Compass (Busola) Magnetic Direct Reading, PZL Type 1 F-86 for the Air Corps

for the Air Corps

which also contains a scale with numerals and markings printed upon the glass

D versions as shown in the B-52 Flight Manual dated 1966

as used in the C-47 Dakota Transport with a similar version used in the TBM Avenger Torpedo Bomber

The Altitude Selector Switch allowed the pilot to set the lower altitude limit over the terrain

Compass (Busola) Magnetic Direct Reading, PZL Type 1 F-86 for the Air CorpsHere is a Direct Reading Magnetic Compass (Busola), Type 1, made by, or for, the Polish aircraft manufacturer PZL (Pastwowe Zakady Lotnicze). The compass fluid is present and the compass card swings freely. Accuracy seems to be slightly off, but could probably be recalibrated with the compensator screws. Measures ~2. 5 inches diameter and ~2 inches deep.