A circular rotating card showing the 32 principal bearings, forming the indicator of a magnetic compass.
- Compass makers compensate for dip error by intentionally unbalancing the compass card / magnet assembly to the degree needed to provide optimum accuracy in a range of latitudes.
- Thanks to less-than-adequate instrument lighting, I barely could read my BDHI compass card and couldn't see the DME.
- It can be used to determine if DC current is flowing in a circuit by moving it up against one of the two wires in a circuit and watching for a movement of the compass card.
For editors and proofreaders
Line breaks: com|pass card
Definition of compass card in:
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.