3M 26003, PPS Series 2.0 Adapter, Type S2c, 16 mm Female, 1.5 mmThread, 7100135338 
Insize 2187-288, ADJUSTABLE SNAP GAGE, 10.83-11.34″, 6928640314704
$1,099.56
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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