Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy. 
Insize 2112-10, DIGITAL INDICATOR, 12.7mm/0.5″, lug back, 6928640311857
$110.04
Resolution 0.01mm/0.0005″
Button function: on/off, inch/mm, zero.
CR2032 battery, automatic power off.
Data output.
Optional accessory: data output cable, backs, contact points
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