Dynabrade 78530 3" x 1/4", 1/4-20 Female Center Thread, 80 Grit, 8-Ply, Dynacut A/O Square Pad, 100/pack 
Insize 2187-76, ADJUSTABLE SNAP GAGE, 2.76-2.99″, 6928640314476
$205.36
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,
Related products
Measuring/ Inspection Instruments
$110.63
Measuring/ Inspection Instruments
Insize 6140, DEPTH BASE ATTACHMENT, suitable for calipers with beam width (w) .630″, 6928640303579
$24.78