
I bought this unit after returning a unit that was about $10 cheaper but didn't work. This device gives me a very accurate RPM reading when reading the spindle RPM on a CNC router equipped with a spindle encoder and RPM reading. The speed comparison with the CNC machine was within 1% or better. I highly recommend spending the extra $10 on this device.

Non-Contact Handheld Digital Tachometer for Precise Measurements
3 Review

π Highly Efficient REED Instruments R7050 Compact Tachometer: Boost Performance with Precision Monitoring
3 Review

π Neiko 20713A Contact Digital Tachometer
3 Review

π§ Streamline Your Work with Loos Co PT 1 Professional Hands-Free Device
3 Review