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.
References in periodicals archive ?
The relative relationship of the OBS setting to the compass card remains fixed and manually set, but now the entire compass card rotates as a heading indicator.
Construction includes a high-impact composite outer case, 25X optical glass magnifying crystal, and a Mylar compass card seated on a tiny sapphire bearing that will never wear out Waterproof, weatherproof and highly shock resistant, the unit is specified to work from n40-degrees F.
Since the entire VOR/LOC/GPS display rotates with the compass card, the angular relationship between the deviation bar and the symbolic aircraft fixed in the center of the instrument provides a pictorial display of the aircraft's position with respect to the selected course.
Finally, the HSI compass card can be slaved to a magnetic sensor or non-slaved like your basic heading indicator.
It's more difficult using the deck or glareshield mount and if they don't get it right, it's easy for the compass card to hang up or stick.
Cobalt's +LM loudness meter software, compliant with ITU BS.1770, ATSC A/85, and EBU R128 standards, operates directly with the Company's Fusion3G and most 9000 series COMPASS cards to provide a solution for ingest or on-air loudness metering and assessment.
It also includes a pouch pagefinder with weekly compass cards and a Covey Reference Library CD-Rom for Palm handheld planners.