Precision 81-Piece Steel Gauge Block Set, Grade B Accuracy, Corrosion-Resistant, P900-S581

Everything was nice and individually wrapped. Everything is in spec, some better than others. If you have four or five wringed together, that's when you can start to expect the error to meaningfully add up. Case is fine. Happy for the price.

After reading the many reviews, I decided to order this set. I can fully agree with reviews on the appearance of the blocks, the initial packing of blocks in corrosion resistant packing, and my wood case arrived in great shape as well. I don’t have the means needed to measure these down to the stated values shown on the included chart, and will just have to let that be. I’m not inclined yet to buy an expensive micrometer. Over the years I seem to have somehow accumulated several digital calipers, dial and digital indictors, and some digital height gizmos in a home shop that does mostly wood and not metal work, so go figure! Guitar tinkering is sufficient justification for this, no? Anyhow, this is a good looking set for the money and for a “nice to have” purchase, very satisfactory.

These are actually pretty nice blocks. great for doing simple stuff on a knee mill.

If you are looking for a good quality master set for a clean inspection area, go with a higher precision grade. However, these make a great set for everyday shop use. If absolute precision is not necessary and they will be exposed to the workshop environment, an inexpensive set like this is just the ticket. Negative: They do not all wring together well, and certified dimensions on some did vary a bit farther than I would like from the nominal size. Positive: Inexpensive and comes with a certification displaying actual measurements of blocks. For a shop environment, I would highly recommend. For a master set in a clean environment, get a better set.

Good enough to use as working/bench blocks. Wouldn't use them to run a calibration program but these are 100% good enough to set bore gages or check keyways.

The blocks came wrapped in thin wax paper and coated in cosmoline or some other rust inhibiting substance (the blocks are made of steel - thus required). The "business ends" are polished to a mirror-like finish. The blocks wring together tightly. I have checked a few and they seem accurate enough for my needs. I've compared my results against the laminated spec sheet, of the ones I've checked... the serial numbers match up and the measurements seem to be accurate. Workshop grade gauge blocks should be accurate to 50 millionths of an inch, matching the accuracy of a quality micrometer. Overall, I'm satisfied! Would buy again.

For the price these work just fine.

Wood box took a hard hit, before it was shipped to me based on how it was taped together prior to going into the amazon packaging. Box not perfect but ok. All blocks were serialized correctly vs the included chart. Each individually wrapped with corrosive inhibitor. I've measured maybe 50% with descent shop grade (Mitutoyo) indicators and they do seem correct. They also wring together well, including the larger inch plus sizes. Can you imagine the boredom of putting these kits together...

EXCELENTE

Very nice gauge block set for shop-floor ,it was a concern for the surface finish(read some reviews) but was like a mirror finish ,inspected each block and all within spec.

Product was what I expected. Delivered early.

Delivered on time, measurements were spot on. Perfect for calibrating other gauges or certifying calipers for use on site

I'm a machinist by trade and I bought this set for my tool box at work. It's a decent set to have on the shop floor for gauging parts and setting gauges. The box seems to be decent quality and the fit and finish of the blocks is good and the set comes with a calibration cert. They wring together fairly easily, the one complaint I have is the markings on the blocks could be a bit deeper. As they are they're a bit on the faint side and I could see them becoming illegible after heavy use. Overall a good buy.