Laser Light Source used for greater accuracy and longer measuring distance
Extech's 461920 is a tachometer for RPM measurements. Make safe, non-contact RPM measurements (2 to 99,999 RPM) of rotating objects by pointing the integral laser (1.6-ft. target distance) at the reflective tape placed on the object to be measured. Complete with 9-Volt battery, reflective tape and user manual.

Specifications Range
RPM range 2 to 99,999 rpm
Count range 1 to 99,999 rev (revolution)
Target Distance 1.6ft (500mm)
Basic Accuracy ±0.05%
Resolution 0.1rpm, 1 count
Dimensions/Weight 6.2x2.3x1.6" (160x60x42mm)/5.3oz (151g)