Compass (Busola) Magnetic Direct Reading, PZL Type 1 F-86 which also contains a scale

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

Spare bulbs are contained in the two receptacles below the red and green lights (see photo showing the bulbs removed)

but is stiff and requires some TLC

We have not tested it

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

Compass (Busola) Magnetic Direct Reading, PZL Type 1 F-86 which also contains a scaleHere 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.