3M 87185, Cubitron II Roloc Durable Edge Disc 947A, 87185, TR, Maroon, 3 in, Die R300V, 7010327554, 5 per case 
Insize 2187-213, ADJUSTABLE SNAP GAGE, 7.87-8.39″, 6928640314643
$782.43
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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