Digital Caliper Measuring Tool, 6 Inch Caliper Tool with Large LCD Screen, Easy Switch from Inch Millimeter Fraction, Stainless Steel Vernier Caliper Digital Micrometer

Not perfect but well worth the price for light/amateur use. As with most digital calipers, the problem is getting it to return to "000" when closed every time. I often have to re-zero when I close the jaws. This is not a reason to avoid buying - just something to be aware of. I've owned the hugely expensive Mitutuyo equivalent and even this had the same problem after some time. The battery cover secured with two M2 screws (not self tappers) instead of the flimsy sliding plastic lid on other models is a nice touch.

After I ordered this Jiavarry caliper I read the one-star reviews where users complained it did not last very long for them before going into error mode and rapidly displaying random non-sensical numbers on the digital display. When it finally arrived (took a few more days than originally promised) I immediately tested it out with a 1-2-3 block that I purchased from Amazon for that purpose, as well as a feeler gauge set that I also purchased from Amazon. In both cases the measurement was PERFECT - the 1-2-3 block measurements were EXACTLY one-inch, two-inch, and three-inch all the way down to the thousanth (like 03.000, not 03.001 or 03.002). The feeler gauge I measured was also perfect (0.035 and so on) with no variation or skipping around with the measurement. We'll just have to see how long it lasts, but if it lasts 9-months or more, I will be satisfied given the low cost (about $15 with the discount offered by Amazon). It also feels substantial in weight, and well balanced, unlike the cheap Pittsburgh brand from Harbor Freight Tools which I've had for a number of years, but have never been as near as accurate as this one. The plastic case is also nice and should keep the caliper protected from the elements throughout its life. The only negative I have is the battery compartment has two very tiny screws holding a plastic plate over the battery, and I worry those screws could be easily dropped and lost. The screwdriver provided in the case is slightly magnetized so I'm hoping that is enough to keep hold of the screws. I imagine if I lose one of the screws I could use duct tape or something, but in the mean time I will just be really careful, hope the battery lasts a long time, and open the battery compartment with great care over a bench to keep the screws from scattering.

I am impressed and pleased with these calipers, and relieved to have them after attempting to measure a small screw hole with an office ruler yesterday. Trying to get work done with bad tools is just the worst. I ordered the black ones because it’s easier for me to see the numbers. The surface behind the numbers is a matte finish, not shiny, so glare isn’t a problem. I received mine in late January, 2026. I saw conflicting information in some of the earlier reviews about the display of fractional numbers. Some people reported that all fractions were displayed in terms of 128th of an inch. That is not the case with the calipers I received (again, the black ones). These reduce the fractions to their simplest terms, so 1/4 inch is displayed as 1/4 inch, not 32/128ths. They came with one battery installed, plus two spare batteries. Also included was a tiny screwdriver for opening the battery compartment. Very thoughtful. You probably already know this, but these batteries are terribly dangerous (potentially lethal) if a child or pet were to swallow one. Please be careful to keep the batteries in a safe place. I can’t comment on the longevity, as I only just received them, but I expect with reasonable care they should last many years.

I bought the stainless steel black caliper. It's A LOT heavier than I had expected and the slide and adjustment wheel are looser than desired, but the unit I got is quite accurate and I love how easy the ruler and LCD are to read. Overall, I think it was a decent buy for $20. I'm not a huge fan of the case, which I think should be something one should be able to open with one hand, as I often find myself reaching for the caliper while I have something in my other hand.

sturdy easy to use and its very reliable for sizing, it does slide smoothy i have not used the lockability. the auto off and it works as it should. that works as it should it is bright enough to read