The portable optical handheld tachometer from Laser is used for non-contact measurement of rotational speeds. Uses include maintenance & adjustment of various machines, conveyor belts, motors & belt drives & more. It uses photoelectric, anti-jamming & junction laser technology to provide non-contact measurements over a wide range (2.5 – 99, 999 RPM) & at great accuracy (± 0.05% + 1 digit). A reflective mark is placed on the object to be measured (white reflective tape is provided for this purpose) & this is used as a target for the instrument's integral laser light beam. The detecting distance is 50-500mm, & the sample time is just. 8 sec, so that the rpm is displayed on the large & clear LCD display almost instantly. The digital tachometer has a memory function (minimum, maximum & last values) & 96 sets of continuous data can be saved. It
Includes:: a low battery indicator, & three AA batteries are included for added peace of mind.