Came with a bent locking screw. Not one surface is smooth. Took it apart and cleaned it, still feels like it has sand in it. The numbers are so light that you need really good light to be able to read it. Really poor quality- not even worth the $25.

The plastic box arrived damaged, the caliper has a +3mm error!, it's insane, also a lot of play, really cheap quality, completely useless, will be returned.

Not even in the ballpark what I expect from a precision instrument. But for what I needed, it is just fine. I just needed a one-off tool for measuring 9"-12" items do something reverse engineering and some 3D printing.To a tenth of a millimeter, to get numbers to plug into a 3D printer, it is perfectly serviceable.It works for what I need it for.

el producto es bueno solo un pequeño error de envio

Muy baja calidad, el producto tiene mucho juego, no es correspondiente a su precio, al pedirlo la caja venía rota.

Sehr schlechte Metall Verarbeitung aber die Scala passt.Fazit: Billig und nicht besonders gut verarbeitet, man kann aber damit arbeiten da genau

I have always kept a "beater" set of calipers on hand - and ones with a sliding scale i.e. NO digital display and NO dial - because they are lighting fast at taking measurements tape measures or rulers can never do. Plus if you drop them off a roof or they endo off a car onto concrete/asphalt ... you don't want to jeopardize an actual precision tool!Sometimes (for me, home-jobber, handyman type, that means 98% of the time) +/- 1/32 or 1/64 of an inch is TOTALLY sufficient. Good luck getting those tolerances with a ruler or tape measure on round objects in awkward and poorly lit locations! And there's no way either of those device can give you depth measurements!So beater calipers are an indispensable tool in my tool kit. Yet since they are NOT for high precision, bothering to get a digital display or dial mechanism makes absolutely no sense; they are delicate and finicky. My plastic beater calipers have been used in scorching heat, totally wet conditions, and sub zero temperatures. And they have been dropped onto the ground (often concrete) dozens of times. The jaws have worn off and the scale is becoming truly unreadable so I had to find a replacement.My originals, lasting more than four years of serious abuse cost me $1 and came from "Hazard Fraught." Replacements from HF today cost $2. For some stupid reason, every plastic offering on Amazon costs $10-$12. Unacceptable. Plus if the scale can only last four years of abuse, why would I buy ANOTHER plastic one at that inflated price when these STEEL ones are only $15?I've concluded calipers with no dial and no digital display (and no need for high precision) are essential. The wearing of the plastic jaws and the scale printing on the plastic units is unacceptable long term. You can get great precision calipers (either digital or dial) for $20-$30. Not professional machinist/mechanic quality, mind you. But VERY serviceable, well constructed units that will get you tolerances of +/- 0.001 inch or 0.05mm are easily found for that low cost.Anyone who would buy any dial-less, digital-less pair for $15 and then complain that they weren't precision or nicely finished is way off base. If a person wants precision in finish and measurement tolerance then BUY A PRECISION INSTRUMENT. And such a person should note they WILL cost you more than $20. Professional calipers can be $100-$200 or more! How can you complain about a mass-produced $15 tool?These are $15! and so tere is no room to complain when (on Amazon) at just a few dollars less winds you up in plastic land.These are little rough, yes, and the scale markings are actually in "burnt umber" or something (i.e. they are not black). So the scale reading is actually a little hard to read. But the sliding jaw has a knurled thumb screw to retain it in place and it seems to work very well. So you can measure, lock down, then withdraw from the dark, dank, spider-infested hell hole you took the measurement in, then withdraw to good light to actually read the measurement.The action is totally fine. It feels cheap in the hand, but not "plastic calipers" cheap. Not by a long shot. Plastic ones would probably take a tumble from up high onto concrete MUCH better than steel ones. But I've made that gaffe enough times that I don't do it hardly ever anymore. Even if you did, again, these are $15 calipers. Who cares? And what reasonable person could complain if they didn't survive?If you refrain from dropping these calipers, they will be FAR more reliable than cheap dial or digital calipers because there are no moving parts! For this unit they declare an accuracy of +/- 1/128 an inch and 0.05 mm. Honestly if I was ever wanting to be that precise, I would not use these. I have very nice calipers that I use for precision work. And I would never take those calipers onto a rooftop, or into a crawlspace, or under an automobile... But in those locations, these calipers will work perfectly and - if I can hopefully avoid dropping them at height onto concrete - they will last longer than me.Hat's off! I think these are the cat's meow and I can't wait to use them in the field!