- Class Z Tolerance of .0001" and a roundness limit of .00005"
- Sets furnished in .001 inch steps
- All members 2” long
- All gages and sets are traceable to N.I.S.T.
- Boxes and gages both marked
- All pins over .060” are laser marked with size, direction of tolerance and Serial numbers
- Material: 52100 Bearing Steel
- Heat treated to a Rockwell C Hardness 60-62
