After I used several very nice Large Scale Digital Calipers that help me to take not accurate measurements in the workshop, I vowed for my next Large Scale Digital Calipers to put high precision before brand. The benefit of these Tresna a Large Scale Digital Caliper is not only their low relatively-low cost, but also their versatility. They can be used to take the inside measurement when I’m trying to measure the internal width of a groove, give me the length of the metal stick when I?m making a machine– day or night — and give me pleased measuring result when I go to the machine shop to work on projects. The screen runs almost perfectly, with nearly 100 percent accurate. They are made of stainless steel, which means they?re shatter-proof even when struck or dropped to the ground. In the ten months I’ve been using it, I’ve dropped it lightly a couple times and they’re still pretty much accurate. Over the winter, I worked in a machine shop lathing, sawing, drilling, tapping metal and wood twice a week for 3-4 hours and a couple weekends straight through until the summer is coming.
Unlike the cheap, standard shop Large Scale Digital Calipers which I’d constantly use and put away and occasionally forget to use back, these are so accurate I rarely put them into the case. It’s important to note they do have a fine-adjustment carriage and the jaws have round measuring faces for accurate inside measurement. On the one hand, that’s why these are much more accurate, but then again, that makes these potentially unsuitable for tasks where outside measurement is recommended. For my usage, though, which is primarily taking inside measurement tasks, they’re great. Definitely one of the most functional things I own, and considering they’re extremely useful, they look pretty good.