2-in-1 Digital Tachometer Non-Contact RPM Gauge Tester Meter 3~100000RPM and Contact Tach Speed Meter 3~19999RPM Handheld Tachometer with Backlight, Data Hold, MAX/MIN, Auto Power Off

Works good

ممتاز. وعملي

Used it to set idle and govener on snow blower ( laser function). I have not triied the wheel function. Colored output shaft with black magic marker with a single white grease pencil mark. Havnt not bothered with reflective sticker.

This worked great to test my tractor power take off shaft spin speed. It came with reflective tape to stick on what you want to measure. Easy to use.

I found it difficult to get good readings, but that could just be me and the way I use it