📸 Cutting-Edge Digital Photo Laser Tachometer: Accurate Non-Contact Tach RPM Meter Review

After some tests the thing doesn't work. It shows some random readings even when I'm pointing at my desk. -------- Just receiving this I can hear something inside falling apart. It makes noise when I shake it. So I opened it up and found a tiny tin ball rolling around (see photo). Don't check the quality at all before shipping? I'm assuming that tin ball is bad solder falling off the board. And of course the soldering on the board is just plain bad. The receiver (I think) even has a needle…

A disappointing speedometer. I took it out of the box and the reading window fell out. I pointed to a roll of tape I had on my bench and he said it was spinning at 7100 rpm. I pointed out other non-spinning things and was given a wide range of rpm. I pointed it at my CNC machine spindle which already has a piece of reflective tape on it and I couldn't get a consistent RPM reading. The laser target beam is only about 1/3. It looks like a crescent. I send it back and receive "AGPtek® Professional

I have had very good experiences with this tachometer. It seems very accurate, of course with any HAND tach you have to be careful to keep your hand VERY steady, especially at higher speeds. If your hand moves even slightly, the readings will be severely distorted. I use this to get accurate RPM readings on my milling machine so I can sync the cutting head to the spindle. Since the machine uses a variable speed belt it's not possible to get the machine to produce exact spindle revolutions, but…