Beha Amprobe 3311961 TACH20 tachometer

RPM measurement, speed measurement, length measurement, display of the RPM, display of the speed on the surface in m/min, ft/min and in/min, display of the length measurement in m, ft and inch, integrated measured value memory, the last value, the maximum value or the minimum value are shown in the display, optical (contactless) or mechanically coupled measurement, the optical measurement is visible through a red modulated light beam, auto power off approx. 30 sec. (data remains saved)