Only from Vermont Gage
Black oxide treatment prevents corrosion
And shows gage wear… saving money and
time. Make quick and accurate measurements
with Black GuardPin Gages. Measure hole
sizes. Calculate distances between holes.
Gage slot widths. Check locations. Use for
Go / No-Go gaging. Size in micrometers and
Snap gages. These gages are a must for anyone
Making frequent and varied measurements.
Black Guard… only from Vermont Gage.


Black Guard
* PREVENTS RUST & CORROSION *
* VISIBLE WEAR INDICATION *
* BRIGHT CLEAR MARKING *
* LONGER GAGE LIFE *
Black Guard black oxide treatment typically penetrates .00004" to .00006" deep, which will visually reveal wear patterns allowing the inspector to calibrate or replace gage pins more effectively. Black Guard treatment will help prevent rust and corrosion which will extend the useful life of the gage.
Class ZZ ( .0002" or .005 mm tolerance). * Go (Plus) or NoGo (Minus) * NIST traceable * .0005", or .02mm sizes * .001" or .02mm set increments * 52100 tool steel; 60/62 Rc * 2" long * 10 microinch finish or better * Within .0001" round * Marked with size & direction of tolerance on gages over .060" * Certificate of Accuracy included * Registered ISO 9001:2000