GEARED MEASURING DEVICE, ESPECIALLY FOR A TACHOMETER OR A REVOLUTION COUNTER

摘要

The invention relates to a geared measuring device, wherein the rotation of the drive shaft (4) can be transmitted to an intermediate shaft (1) via a first pair of toothed gears and from the intermediate shaft to a measuring device drive mechanism (7a) via a second pair toothed gears. To this end, a first toothed gear is arranged on the drive shaft (4) and a second toothed gear is arranged on the measuring device (7a). The parts of the toothed gear pairs are configured on the intermediate shaft (1) as a cylindrical worm (6) and at least one toothed gear (2, 2a, 3) has a semi-globoidal shape gear (2, 3).