Standard Abrasives 701149, PSA A/O Disc, 1 in x NH, 240, 7010370103 
3M 54137, Scotch-Brite, Roloc AL Surface Conditioning Disc TR, 2 in x NH A CRS, 7100075554, 200 per case 
Insize 2187-57, ADJUSTABLE SNAP GAGE, 2.01-2.24″, 6928640314445
$190.63
Used as Go/No-Go gage by setting upper and lower limits.
Flatness of anvil: 59_in.
Parallelism between tips and anvil: range 0-1.26″: 118_in,
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