IPC Subgroup
G01C 17/28 Electromagnetic compasses
Introduced: September 1968
Last revised: January 2006
Full Title
Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes > Magnetic compasses > Electromagnetic compasses
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
2 direct subcodes
Child Classifications
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- G01C 17/3 Earth-inductor compasses
- G01C 17/32 Electron compasses