Review on Accurate Measurement with OTC 6673 Belt Tension Gauge: All-Purpose Universal Tool by Michael Tarlue

I bought it for our bus on the recommendation of some professional mechanics. The first order was delivered quickly, but due to a manufacturer error, the piston guide broke a couple of times after the first push on the piston. I submitted a return/replacement request to Amazon/Seller and the seller responded immediately, apologizing for the issue and saying they would send a replacement as soon as possible. The new device arrived two days later. I used it on my trainer straps yesterday and it worked as expected on straps that I can reach easily. In truth, I can't access the Poly-V belt as it's too close to the engine block/various components, so I'll have to (a) buy another tension sensor, or (b) rely solely on a new tensioner. I install to do my job.