for indicating a direction in the horizontal plane, e.g. directional gyroscopes

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 a direction in the horizontal plane, e.g. directional gyroscopes

Classification Context

Section:

PHYSICS

Class:

MEASURING; TESTING

Subclass:

MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY

Child Classifications

Navigate with arrow keys, Enter to open

• G01C 19/36 with north-seeking action by magnetic means, e.g. gyromagnetic compasses
• G01C 19/38 with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation