Extech 461920 Mini Laser Photo Tachometer Counter

Laser Light Source used for greater accuracy and longer measuring distance Extech #39;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 #34; (160x60x42mm)/5.3oz (151g)