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With 23 Holes
Squareness: 0.0003"/1"
Parallelism: ±0.0003"
Height accuracy in pair: ±0.0003"
Hardness: HRC 56-62
Finished from 6-16 micro inches
5 holes tapped to 3/8-16 and others are untapped
Precision ground on all sides
Squareness on all sides
Surface finish
Oversize to allow nominal tapping
Package Includes :
1 * matched pair 1-2-3 blocks
AZN
Reviewed in the United States on March 6, 2025
Son asked for this to help him with architecture structure building. Otherwise I never knew these existed. Fits his need
mrscams
Reviewed in the United States on February 7, 2025
Great value
W. Wright
Reviewed in the United States on September 9, 2024
This will do what I need it to, but buyers should be aware that they are not quite "Ultra Precision 0.0002 1 2 3 blocks," but rather Fairly Precice 0.06 0.937 1.874 2.811 blocks. Fine for squaring things off but far from precise for machining purposes. The chamfered edges are pretty rough and dinged up too.I'm dinging one star for not quite being as described and another for claiming Ultra Precision 0.0002 when it clearly isn't. I'm fine with them as is, but honesty is always the best policy.You do get what you pay for and the price was not bad, but if you need precision spend more.
Joshua D. Rimmer
Reviewed in the United States on September 18, 2024
These blocks were well finished, but as another reviewer mentioned, nowhere near .0002" dimension tolerance. Mine were at .0005" over nominal, out of tolerance by .0003", on all three faces. Also the tapped holes are M16-2, not 3/8-16!
Kate
Reviewed in the United States on March 18, 2024
Product was packaged nicely - pricing was fair and the 1-2-3 blocks will work great. However the product was listed as 2-4-6 blocks and thats what I thought I would recieve .
Cameron
Reviewed in the United States on December 1, 2024
Looks like a reship/returned item, inner packaging open, missing block, box taped shut with shipped tape. Disappointing overall.
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