IPC Subgroup
G01C 17/38 Testing, calibrating, or compensating of compasses
Introduced: September 1968
Last revised: January 2006
Full Title
Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes > Testing, calibrating, or compensating of compasses
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY