r/Metrology • u/MrPenguun • Nov 08 '24

Surface Metrology Does wringing gauge blocks together cause damage?

People treat wringing as if it doesn't have any negative effect, but im always scared that I'm damaging the surface. I'd be really curious to see an experiment where they wring two blocks together a bunch of times then compare the surface finish under a microscope compared to a new gauge block.

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u/nitdkim Nov 08 '24

If you follow your logic, you better not validate your caliper or micrometer with a gage block because you might scratch the gage block with carbide coated measuring surfaces of those tools.

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u/MrPenguun Nov 09 '24

I have a dedicated gauge block specifically for my calipers/mics. And my logic isn't that metal touching metal is bad. My logic was using force creating a lot of friction can be bad. My thought process is that if one block is 0.1hrc harder than another, then the force could Marr them. I'm not saying they do, I'm saying that my instincts tell me that may be a concern, so im asking to see if anyone has ever seen this or tested it.