IPC Subgroup
G01C 19/44 for indicating the vertical
Introduced: September 1968
Last revised: January 2006
Full Title
Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects > Rotary gyroscopes > for indicating the vertical
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
1 direct subcode
Child Classifications
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- G01C 19/46 Erection devices for restoring rotor axis to a desired position