compass card(redirected from compass cards)
Also found in: Dictionary, Thesaurus.
compass card[′käm·pəs ‚kärd]
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.
A drumlike scale, marked in degrees from 001° to 360°, fastened around the float in an aircraft magnetic compass.