WFLNHB2-4-6 Blocks 23 Holes Matched Pair Accuracy 0.0002" Machinist 246 Jig

These are high grade, accurately made blocks. Very heavy! Lots of uses in the shop. Great as mini- support blocks when hand-bushing clock movements. Very satisfied with my purchase of these blocks.

They are one two three blocks. They are accurate. Not much else to say.

we use this for microsoldering jobs to cool board faster. works great

Good price for these no hole 123 blocks.

The machinist blocks themselves are fine and will meet the need I have. However, they almost did not arrive. The mailer they were shipped in was not strong enough, it tore, and they arrived at the post office separated from the package. It was only the good work of the postal clerk that saw to it and delivered them to me. They are relatively heavy and need to be shipped in a better mailer.

They do exactly what you want, as in they are perfectly square, nice and heavy, and exceedingly useful for true-ing up joints and assemblies, or as weights when gluing. I wish I had more, you never have enough of things like this.

I thought it would be neat to have some solid 123 blocks so I took a chance on these. I checkout out my blocks with my tenths indicator and wow, they're very good. 1" and 2" dimensions were about half a tenth high compared to my gauge blocks and imperceptibly different between the pair, and I could not detect any lack of parallelism. I couldn't get the needle to move past the the first tenths line no matter how I moved the blocks around.The 3" dimensions were the same in terms of match and parallelism but about 2 to 2.5 tenths over 3" compared to my gauge block (and confirmed with micrometer), so that was the only dimension that might start to challenge the claimed 0.0002" accuracy.Overall, these are more consistent and accurate than my other 123 blocks so I think I'll buy some more of these blocks.

Received only one block instead of the advertised two blocks.