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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Insize QMS-A450-U, LARGE SIZE QUICK MEASUREMENT SYSTEMS,
Standard Abrasives 726057, A/O R6 Taper Precision Cartridge Roll, 3/8 in x 1-3/4 in x 1/4 in 60, 7100098752 