compass card

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compass card

[′käm·pəs ‚kärd]
(design engineering)
The part of a compass on which the direction graduations are placed, it is usually in the form of a thin disk or annulus graduated in degrees, clockwise from 0° at the reference direction to 360°, and sometimes also in compass points.

compass card

compass card
A drumlike scale, marked in degrees from 001° to 360°, fastened around the float in an aircraft magnetic compass.