Definitions for "Tachymeter"
An instrument, esp. a transit or theodolite with stadia wires, for determining quickly the distances, bearings, and elevations of distant objects.
A speed indicator; a tachometer.
Function that measures the speed at which the wearer has traveled over a given distance. The scale is calibrated to show the speed of a moving object over a known distance. The standard length on which the calibration is based is shown on the dial - ex: 100, 200 or 1,000 meters.