Review on Handheld Digital Laser Tachometer Non-Contact RPM Meter Motor Speed Gauge Gun Measuring Range: 2 by Richard Sallah

I bought this to calibrate a tachometer on a boat and it worked great! The laser comes with several reflective strips that you stick on the gear/pulley/object to be measured. I bought a few extra strips in case I want to measure something else in the future. must be turned on again. If it weren't for that little annoyance I would have given it 5 stars.