CPC Subgroup
G01C 19/34 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
2 direct subcodes
Child Classifications
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- 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