Origin of compass card
Examples from the Web for compass card
The compass-card spun round like a teetotum, whirling faster and faster.Gun running for Casement in the Easter rebellion, 1916|Karl Spindler
A subdivision of the compass-card, equal to 2° 48′ 45″ of the circle.
FLY, or Compass-card, placed on the magnetic-needle and supported by a pin, whereon it turns freely.
It is also applied to the undulation of the compass-card when the motion of the vessel is considerable and irregular.
As a result, Prof. Thomson devised a compass-card which is remarkable for its lightness and sensitiveness.Makers of Electricity|Brother Potamian