1-2-3 Precision Block Parallel Blocks 23 Parallel Holes Metric Block 1 Pair Ultra Accuracy 1‑2‑3 Matching 23 Holes Super Exactness Block with Screw Wrench Box

I am all round happy with the purchase, I am only using these as a faster way of re-squaring my compound and tool post, and some clamping and small repeatable setups for fabrication. happy with the quality and the case is nice too.

Very happy with purchase

Cleaned up the blocks and they measure the imperial dimensions stated, unfortunatley on checking the unthreaded holes these were found to be the incorrect tapping size to tap 3/8 x 16 BSW, the bolts would be a rattle fit. I was hoping to tap these if required on later projects.

This is a very affordable set of 1 2 3 blocks, but NOT the cheapest. When i saw the set came with bolts I thought they'd be the sort you can bolt together to form a solid right angle. However it turns out this is a feature only for very expensive sets. The bolts are for holding the blocks down onto a clamp set, work service etc so still useful. These will be fine for wood work, and some light crafts (which I used them for) just be ware you can't bolt them together for a solid right angle

Great little set… glad I ordered 2 offVery useful

10 out of 10

I've been using these for a few months now and they're fine for basic use in woodworking but if compared to an engineers square they are visibly out and the holes don't line up with each other so they can't be bolted together to be used as an angle guide. I wasn't expecting perfection for this price but they weren't the cheapest so really hoped I could at least connect them together. Either save your money and go for cheaper ones or cough up and get better quality, these are not worth it.

Perfek