CPC Subgroup
G01P 3/22 transferred to the indicator by electric or magnetic means
Full Title
Measuring linear or angular speed; Measuring differences of linear or angular speeds (G01P5/00 - G01P11/00 take precedence; ; counting mechanisms G06M) > Devices characterised by the use of mechanical means > by using centrifugal forces of solid masses > transferred to the indicator by electric or magnetic means