Dynabrade 95745 1/4" NPT Speed Regulator 
Insize 6884-E12, CALIPER/HEIGHT GAGE CHECKER, 0-12″, 6928640358876
$2,753.18
To check calipers and height gages.
Constructed with steel gage blocks.
Size: 0-12″
Accuracy: +/- 200?in.
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