6-Inch Vernier Caliper Measuring Tool

Most of the other reviewers complains about various issues with this caliper: accuracy, oily, possibility of rust, roughness of edges. All right complains, but they need to be put in perspective. If you are considering the purchase of a vernier caliper you know at least something about mechanics. How many parts made such a device? Building that many, with highest quality material, to the highest possible standard for accuracy (hence sharp) on one side of the part (the "internal") and for user friendly (hence smooth) on the other side (the "external") cannot be made cheap. All manufacturing procedures have tradeoffs. So for the price, this is an excellent product. Is it accurate enough? Yes, mine is accurate to the level of the vernier scale, however a tiny bit wobbly at that level, hence one less star in accuracy. Easier to read. Is it oily? Yes, but for most use that's minor problem. Is it rusty? No, but the manual says that if you clean the oil completely it might become so. Is it smooth? No, it's a bit sharp. If I had time to spare and would use it more often than I do, I'd try to smooth it with a file. But for occasional use it's totally usable. At this price, it totally deserves five stars. Granted, if you compare it with a similar one costing 10x its price, it would barely get two stars, perhaps it'd get even just one. But that would be an unfair comparison, like a race between an accomplished world champion and a random kid in middle school.

I find great value in this tool. With proper care, it should last a lifetime. I do not know why Amazon desires that I mention Battery Life; but I will say this model was specifically selected because it requires no battery, has no electronic display or any digital functionality (to fail or go out of Calibration). Best described as, "Analog baby." Accuracy confirmed against a different, trusted, 0.001 Caliper and this thing is closer than the listed specifications give it credit for. If for some reason you cannot read a labeled slide-rule, this probably won't work for you. For everyone else, this is the simple, accurate, functional Caliper that you are looking for. I will leave it to a hand model to demonstrate that the thumbscrew locking operation is excellent and smooth, it has smooth and stiff slide-action (not sloppy at all), nice probe depth and allows grip and control in use. Case and even a cleaning cloth included.

Pros: (1) Mine lines up on 0 pretty well when fully closed. (2) The plastic case seems fairly protective. (3) The slide feels snug, not sloppy. ((4) It came with a decent, separate, 6 inch / 150 mm metal ruler.) ||| Cons: (1) The ad says "smooth slide with no grittiness" but the slider movement on the caliper I received definitely feels somewhat gritty. Lubrication helped a little bit. (2) The Inch scale does NOT look like the scale in the ad pictures. The whole-inch numbers on the caliper I received in June 2024 are unnecessarily small & hard to find. I improved the situation a lot by putting a red dot (with an Extra Fine Point Sharpie) above each whole inch number. (See my picture.) (3) If the printed markings are etched, they are not very deep, so the ink may wear off prematurely. (4) The "user manual" is a single 7x10 inch piece of paper with some helpful info, but their example for reading the metric vernier was poor (not helpful). Their online metric vernier example is much better than their printed one. ||| Notes about certain other reviewer complaints that I feel might be unjustified - (1) Some reviewers complained that this caliper can't be stainless steel because it is attracted to magnets "and stainless steel is not magnetic". However, there are over 50 "standard" formulas for stainless steel and some types (hardened martensitic stainless steel for example) are indeed attracted to magnets. (Unfortunately, the ad doesn't specify the type of stainless these are, it only says "hardened stainless steel".) These calipers may or may not resist rust well, but that ability cannot be judged strictly by how well they stick to magnets. (2) Some reviewers complained that the marks on the inch rule are at 0.025ths (40ths) of an inch instead of 1/2, 1/4, 1/8, etc. If you want fractions and you don't need to be more precise than 16ths, you should get a different caliper. However, many metal workers work to decimal inch specs, so this scale is right for them. Plus, getting a precise value from fractional inch vernier calipers involves nuisance frational math because you have to add x/y (from the bar) to z/128 (from the vernier) where y can be 2, 4, 8, or 16. Then you'll probably want to try to reduce the resulting fraction to have a smaller denominator (if you can). (For example, you might read 5/16 + 6/128. (That's 5/16 from the bar + 6/128 from the vernier.) Some math: 128/16=8, so multiply 5/16 by 8/8 to get 40/128. 40/128 + 6/128 = 46/128 = 23/64.) Decimals are MUCH easier to work with than fractions with different denominators are. (E.g. you might read 3 x 0.025 + 0.008 = 0.075 + 0.008 = 0.083.) If you must convert from a decimal inches caliper to fractions, using a chart is pretty easy (you just have the nuisance of keeping the chart close by).

Bought this because I was sick of my battery calipers always dead. Solid feeling and great option when you run out of batteries

I grew up in a Machine Shop with a Father that made just about everything we owned even Airplanes. And we had only the very best Tools for whatever purpose they were designed for and a pair of Vernier Calipers even in the 1960’s for our Shop cost well over $100 back then. So to have in my hand something this nice for $17 Dollars is incredible! They could use some fine polishing. A fine diamond hone can take some of the roughness off the edges but overall I am extremely satisfied with the quality of these. If they were polished they are $100 Verniers easy. Assuming the accuracy is there? I have no means here to measure that. But judging by how well these are made give or take .002 shouldn’t be a problem and could very well be .001 thousandths accurate. They are nice. Fantastic bargain!

Quality seems excellent. My HF digital caliper also claims 001" precision and also shows the next half-thousandth (.0005"). It matched this vernier caliper, nearly always to the half-thousandth. And two other inexpensive calipers matched this vernier caliper. The one I received seems to be built correctly in contrast to some other reviews. However - I thought I could read Vernier, I learned on pre-electronics land survey instruments long ago. But the graduations on the Inch scale are so close that I mis-interpreted the reading, about one-third of the time. And note you will need a magnifier - I use a jeweler's headband stereo magnifier - to see the reading. I would write down what I thought was the measurement. Then the digital caliper, about a third of the time, would show at least .010" larger. Back to this vernier caliper, I found a matching tic at that larger measurement that also was as perfect a match as what I had relied on. One workaround for this mis-reading is to look at the measurement on the coarse scale and estimate between the tics, for example 60% of the way to the next tic. Then go look for a perfect match on the fine scale. In the example of 60% that will be about +.014". (60% x .025" graduations). This thing is definitely Old School. No battery needed, which is why I bought it. But the need to use a magnifier to read it makes it less convenient than the modern digital one. I watched a YT video explaining a Starret (famous quality brand) vernier caliper and I see the Starret is easier to interpret. Its coarse graduations are .050" while this one has .025". And its fine scale is twice as long with larger graduations, so its easier to see where tics match. With good eyesight a magnifier wouldn't be needed. The ultra-small graduations are not only hard to read. Coarse graduations of .025" plus adding a number 0~25 from the fine scale to arrive at total measurement is more confusing than I expected and prone to error. The Starret, for inches, and the mm scale on this, are easier math to work in your head. If you don't understand this paragraph then a vernier caliper isn't for you! Overall - a quality tool but for purists. For general use go to HF and get their .001" digital caliper, and some spare batteries. Several reviews here rate that tool better than other inexpensive digital calipers. I gave up and returned this. Expand the photo at the head of this listing. (And you will need an excellent magnifier to see anything like that). Is that showing 0.670" +0.001? +021? +.022? I can't measure with thousandths precision because I can't distinguish which tick is best. I made too many errors compared to using the digital caliper which was unambiguous.

Overall, these are great calipers! I tested against several rulers, a measuring tape, and other standards for accuracy. The calipers are always right on the spot for measuring and are very sturdy. I like that the calipers can be locked to keep your measurement. There is also a feature that allows you to measure depth of a depression using the sliding rod that comes from the bottom. This turned out to be a very handy feature! Overall, these are very accurate and seem to be really sturdy as well! It is worth it to mention that they also send a little ruler with the calipers that comes in handy elsewhere. I heavily suggest buying these if you need a standard and reliable pair of calipers. My experience with the digital calipers is that over a short period of time, the digital display messes up and they are basically unusable at that point. That is the main reason I got these. They are sturdy solid metal as well! Far better than any plastic pair.

I was drawn to this particular caliper because: * it requires no battery * convenient size * all metal construction * budget friendly Fully satisfied with all of the above. As others have noted the finish is not highly refined- but neither is the price point so that’s not a big deal to me. It’s perfect for my needs which are hobby and homemade projects.

Ho recentemente acquistato un Calibro a Corsoio da 150mm / 6 Pollici in Acciaio Inox e sono rimasto molto colpito dalla qualità del prodotto, a partire dalla sua confezione. Il calibro è arrivato all’interno di una scatola di plastica rigida, che non solo assicura una protezione ottimale durante il trasporto, ma è anche perfetta per la conservazione dello strumento. La costruzione in acciaio inox del calibro conferisce una sensazione di solidità e durabilità. La precisione del micrometro di misurazione è eccezionale, consentendomi di effettuare misurazioni esterne, interne, della profondità e del passo con estrema accuratezza. Questa caratteristica è fondamentale per i miei progetti, dove la precisione è un requisito non negoziabile. L’uso del calibro è intuitivo e confortevole, con una risposta fluida e precisa nella regolazione. La scala è chiara e facilmente leggibile, un aspetto importante per garantire misurazioni rapide e senza errori. Il valore aggiunto di questo prodotto risiede anche nella sua versatilità. È adatto sia per professionisti che per hobbisti, rispondendo a una vasta gamma di esigenze di misurazione. Inoltre, la robustezza del calibro mi fa prevedere un’ottima longevità del prodotto, rendendolo un investimento valido nel lungo termine. In conclusione, il Calibro a Corsoio da 150mm in Acciaio Inox è uno strumento di misurazione eccellente, sia per la sua precisione che per la qualità costruttiva. La cura nella confezione e nella protezione dello strumento aggiunge ulteriore valore, rendendolo un acquisto altamente raccomandato per chiunque abbia bisogno di uno strumento di misurazione affidabile e durevole.

Functional and precise. It looks a little cheap, but the price is competitive.

精密な測定としてはわかりませんが、デスク横に置いてるととても便利です。 ネジ幅であったり、ちょっとしたものを測るときに重宝してます。 新品の時はバリがあり少し開閉がギシギシしてますが、少しだけコンパウンドかけたらヌルヌルです。 安物買いなのかわかりませんが、個人的にはコスパよくて満足してます。あと思ってるより重量感あります。

Good quality, clear markings, well made, smooth surface

Works as well intended. I initially it was a little hard to slide but wore in fast, nothing unexpected. Came with a nice metal ruler as well. Great old school analog (never runs out of battery) calipers