Fowler 52-058-016-0, Vernier Caliper with 0-6"/150mm Measuring Range

I got this to work use with a SainSmart Genmitsu 3018 Pro desktop cnc machine. I used the depth gauge and the step gauge to square the xy-table to the frame and then took a set of measurements and used them to modify the GRBL code settings to re-calibrate x-, y-, and z-axis. The fine adjust let me do this with great control over the vernier scale. The material quality of the caliper is outstanding; stainless steel is good stuff, and I expect the caliper to last for years. The US customary main scale of the caliper is graduated in 10ths of an inch, which is convenient more convenient to read than usual division of the inch into 8ths, 32ths, and so on, of an inch. I prefer to work in the metric system instead of the US customary system and the retrograde metric vernier scale really makes taking readings easy. The US customary vernier scale is also retrograde making it easy to read.

Decent, fairly high precision caliper. Like another purchaser, my caliper was not properly zeroed. It is possible, however, to adjust the vernier scales to zero them-- the top scale is held in place with two screws, while the bottom is held by three, and there's enough play between the screw heads and their holes to make the necessary adjustments. It's fiddly work, and you'll need a magnifying glass and probably some kind of clamp to hold the scale in place while tightening the screws. Given the price, I find this acceptable, as well as the fit and finish of the unit as a whole. If you're looking for out-of-the-box perfection, you ought to buy one of the high-end Starrett or Mitutoyo models-- there's a reason they cost hundreds of dollars, and it's not because they have high markups.

So the actual tool is fine. Actually great. It does what its made for and seems to be built very well. But when mine arrived the plastic case was damaged (in transit) so late that night I emailed the company asking if they'd send me a new cover. Most companies drag their heels on something as insignificant as that but when I woke up the next morning there was a message in my inbox from a guy named Dave saying he's gladly send me a new and try to have it shipped by the end of the day. Not only that but he said he'd send me an upgraded carry case from on of their more expensive products as well! IMO thats how you build brand loyalty and in future they'll have a repeat customer in me.

These are built solid, easy to read, and work super smooth. What more could you want for the price? Id buy again.

Very precise. Not so easy to use. I forgot how difficult vernier calipers are to use. Of course I chose them instead of digital or dial calipers, so I have only myself to blame.

Very nice feel on these, they slide nice no crunchy noises. The readings are accurate i put them on a gauge block and it was smack on. Id even go as far to say that these beat starret

The vernier scale allows so much accuracy, and it never slips, or gets dusty, or needs a new battery. This is a great set of calipers. Maybe I just got lucky, but I had none of the problems other reviewers mentioned. My pair is zero on the money when closed. The fine-adjustment wheel works great. And the main slide doesn't bind at all.

There is not a thumb screw adjustment, instead you must squeeze a spring loaded slide bar to move the caliper into position to measure an object. This is more awkward than having a rolling thumb screw. I am considering returning this item for this reason

Very accurate. Good price too.

Es un buen vernier, el cero está bien ajustado algo que es fundamental en un vernier, no será un mitutoyo pero es de buena calidad con buena precisión.

I've checked it against some gauge blocks and it's as accurate as the more expensive verniers I have, it also has a sufficient span to tell you how far apart your nipples are down to the thousandth of an inch. Nice big vernier without the cost. Side note, it comes a little dry, to make it slide a bit nicer I'd recommend touching it up with a light oil.

El cero en el modelo que recibí esta perfectamente alineado. La precisión es muy superior a los Vernier baratos de ferreteria. El comprador debe estar preparado para los siguientes detalles (ver fotos): Recien llegado no se mueve libremente, debe aceitarse para que se desplace correctamente. la escala en mm esta en la parte superior, no inferior. La espuma de la caja no concuerda con el modelo que se envia. El acabado de algunas piezas no es muy "hermoso" que digamos. Si puede vivir con esos defectos, es una alternativa bastante decente a un Mitutoyo mas caro, y muchísimo mejor que comprar pilas cada semana para calibradores mas baratos.

I bought this to measure parts and assist me with product development. I do not need a very accurate caliper like the more expensive kinds, and I don't want a digital one that will need batteries. I also find digital ones flicker back and forth and never settle on a exact measurement. I like analog measuring tools. I use this to measure my small parts that I design, or parts that I benchmark. Works great and is a good price.