BIBARAJM Small Engine Tachometer Digital Tachometer Small Digital Engine Tachometer Inductive Tachometer, Waterproof, Suitable for Chainsaw, Marine, ATV, Motorcycle, UTV Engine

Used it on a GX340 Honda in a Multiquip 6000 generator to set governor high speed and low idle speed. Works great and easy to use, just clip it on the plug wire. Good value for the money, built ok although I wouldn't be dropping it etc. My RPM was high and this confirmed it. Although I have no way of seeing how accurate it is, I'd say from experience it's pretty close. Engine sounded just like it should after adjustment. I was outside in daylight and had no problem reading the display. Give it about 15-30 seconds to "level out" when making carb adjustments (it takes the engine that long to level out from any adjustments you make). All in all it's worth the price.

I needed a way to set the RPM's to 1650 on a Vespa GT. This worked great, was steady, seems accurate, and best of all I can use it to check other things like my yamaha generator, and dirt bikes. Great purchase

Works, helpful for tuning small engines

This is much easier to use than the light one with the reflective tape. Seems to be of good enough quality I'm sure it's accurate. It's small, it's handy. I would buy it again.

Quality Quality works

seems accurate, helped me in a pinch. one of those things you don't need until you need it.

Device was shown as a tachometer for small engine with "replaceable battery capability" however it does not have a battery door where you could replace the battery in the future. It is easy to use by just holding close to the spark plug wire when mower is running to get an approximate RPM reading.

Funciona bien