Features:

  • PRODUCT NAME:photoelectric rpm gauge for non contact.5-digit LCD display with 0.7 inch height linear speed meter.
  • PARAMETER:laser tachometer range from 2.5 - 99,999 r/min.Resolution:0.1 RPM (2.5 to 999.9 RPM),1 RPM (over 1,00O RPM).Detecting Distance:2 to 20 inches/50 to 500 mm.Laser Class II,laser power less than 3mW;wavelength is 650nm-670nm.
  • WAY to TESTING:for an accurate or stable reading,it's helpful for the revolution meter to point directly at tape.
  • APPLICATION:this inductive tachometer suit for measuring the rotational speed of gear,motor,variable-speed drill,drill press,lathe,lawn mower,motorcycle,vehicle,washing machine,airplane,fan,etc.
  • PACKAGE CONTENT:1 x DT-2234A non contact tachometer,3 x 7.8 inches reflective tapes,4 x 1.5V AA batteries,1 x Carrying Case,1 x Operation maunal.
Perfect

It works surprisingly well. I like not having any wires hanging around a spinning fan when working on an engine.

Life saver

I used it on my chainsaw. Great tool. So easy, no hassle, no more guessing.

Works properly

I was concerned after reading reviews, but mine works just like it should.

Good enough for what it is.

This was super cheap. It didn’t turn on when I first got it, so I took the batteries out and re-installed them. I didn’t pay much attention at first, but it’s likely one or more were put in backwards. Perhaps to keep it from turning on during shipping? Anyway, it works. I put a dot of the tape on the headstock of my lathe and it read 86.5 RPM. Was supposed to be spinning at 88, according to the chart I was looking at for the belting and the back gearing. Worked just as well for higher speed at 660 or so. You’ve got to keep the thing close to a right angle to what you’re checking if possible, otherwise reading was sometimes off a bit. I bought this mostly for a lark, but also to check the speed of pulleys and such on various machines I have. Hopefully it holds up over time, and doesn’t fall apart on me. No instructions, but it’s pretty straightforward to use.

good product.

Bought this because my new lawn mower didn't seem to be running very fast. I cut a small piece of the reflective tape and put it on the top part under the rope starter. Worked perfectly and discovered the engine was running quite slowly. I know the speed of about everything I own that spins.

It works good.

Great for testing motors. Would buy again

Exactly what I wanted.

Performs accurately with a large display and the price is right.

Cost effictive

Cost effective and easy to use. It worked great for setting the rpm on my John Deere x300 rider momer also verifying rpm of drill press and lathe

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