🔎 HDE Optimal Digital Infrared Tachometer for Professionals Review

We have a pair of reflex tachometer generators in use. Both are difficult to aim for. I bought this unit to use for hardware testing that I was doing. I was very pleasantly surprised at how easy this model was to use AND how accurate it was when used in parallel with two calibrated devices we had at work. My reason for 4 stars instead of 5 has to do with the fragility of the tachometer. . I dropped this from about 18 inches. The bottom of the case was ripped off and the transparent panel over…

I use it in my industrial electronics class. My adult students find it relatively easy to use. The instructions are pretty much useless.1. Stick a small piece of reflective tape on the shaft of the item to be tested or on the side of the item to be tested.2. Aim the laser at the shiny ribbon. Keep testing until you are satisfied with the speed of the test.3. Press the memory button once to look up or down, then again to look up or down. The display shows you the low and high value of the tested

I bought these (and a new 9 volt battery) to test the speed of a 110 volt 1/4 inch die grinder that I use recently bought. The grinder does not have a low speed specification and I wanted to know which attachment I can safely use at low speeds. In doing so, I encountered two problems. Initially, small reflective strips flew away at high speeds. This device can be accurate to over 20,000 RPM, but another way must be found to determine the point to be measured on the rotating device. Second, you…