Dynabrade 94990 1/4" Female Composite-Style Coupler with 1/4" Male Plug Assembly 
Insize 2187-101, ADJUSTABLE SNAP GAGE, 3.74-3.98″, 6928640314513
$238.28
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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