Introduces Black Guard Class ZZ Gage Pins ( /-.0002 Tol.)
Introduces Black Guard black oxide treated gage pins.Typically penetrating .00004 to .00006 , black oxide gives you a visual wear indication to wear patterns allowing inspector to calibrate or replace gage pins more effectively.
Class ZZ Tolerance ( /-.0002 )
Prevents rust and corrosion
Visible wear indication
Longer gage life
Certificate of accuracy with NIST tracebility included