Starrett 79A-12 Solid Nut Outside Spring Caliper, Steel, Flat Leg, 0-12" Range
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The 6" (79B-1) 6) The distance between the two points is three inches. The overall length is 5" from tip to top. 6" is the largest opening. I don't have access to the 8" version, so I can't assist.
They aren't stamped or etched with any kind of identification, but the box says "The L. Startett & Co. is a company that specializes in the manufacturing of , Athol. Ma. USA
To what standard would these calipers have to adhere? There are no graduations (increments) to be accurate against a standard, unlike a dial or digital caliper, but they are beautifully made and work exceptionally well, as with all of my other Starrett products. They're easy to use on the lathe because the points are rounded and perfectly smooth.
Solid nut is a style in which the nut must be screwed in and out completely. The B style nut is a quick release nut that can be opened completely in one motion.
Selected User Reviews For Starrett 79A-12 Solid Nut Outside Spring Caliper, Steel, Flat Leg, 0-12" Range
If something is well made, it can be beautiful in its simplicity. That's exactly what these calipers are. It's easy to cheapen and deteriorate something as simple as this. Fortunately for Starrett, he resists the temptation. I bought a pair of these for my wood lathe about six weeks ago. They are not only effective, but also enjoyable to use. The tips have a round shape and have been ground and polished. As a result, there's a low chance of the work being ruined. They're easy to praise, as are all of my Starrett tools, because they hold a setting firmly while being quick and easy to adjust. I've never been disappointed when I've chosen to pay a premium for Starrett's quality. And I now own over a dozen of their products.
Smoothly polished spherical tips provide one and only one contact point for each tip on this caliper. When you adjust the caliper and test it on the part, you can tell right away whether the adjustment is too big, too small, or just right by how it feels.
I had bought cheaper calipers before, but they weren't up to par, so I finally gave in and bought these. I'm glad I took the opportunity to do so. Despite the fact that calipers are relatively simple items, there is a significant difference between these and the others I had. I'll be able to keep these for a long time and forget about the cost, but I'll still have a good tool in the shop.
Calipers were adjustable and appeared to be of good quality metal, but they were visibly bent beyond repair. I gave them back to you.
A fantastic tool, at a fantastic price and with excellent customer service.
For measuring, it is extremely precise.
For amateurs and professionals alike, high-quality measuring tools are available.