Description
4 HOLE ALUMINUM CALIBRATION STANDARD. ….2 HOLE SIZES AT 2.38mm DIAMETER WITH A CONER EDM NOTCH .030″ x .030″ X .005″ WIDE ± .001″ IN ONE HOLE. NO EDM NOTCH IN THE SECOND HOLE…..2 COUNTERSINK HOLES AT .0937mm DIAMETER WITH AN EDM NOTCH IN ONE OF T…