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This is called a "lapping plate" we machinist use them with an abrasive slurry to lap metal surfaces to very exacting tolerances. Flatness in the ten thousands of an inch 0.0001" range. That is why it has a protective cover, one dent and it is a headache to lap it flat again.
Bounty: $6.00
Posted By: HelpIdentify
I'd Like to Know:
what this is and what it goes on
Item History: none
Size: 6-3/4" x 3-3/8" x
Markings: none
Opinions
1)
This is called a "lapping plate" we machinist use them with an abrasive slurry to lap metal surfaces to very exacting tolerances. Flatness in the ten thousands of an inch 0.0001" range. That is why it has a protective cover, one dent and it is a headache to lap it flat again.
References:
https://www.google.com/search?q=lapping+plate&rlz=1C1JPGB_enUS691US691&source...
By: Shawn Submitted on: 04/17/2017 at 08:39AM
Accepted