Meyer Pin Gage Set .833 - .916, M6P M6MMeyer Class Z Pin Gage Set Meyer's Class Z Gage Pin Sets are now made to a closer tolerance (0. 00012"), are more accurate, and are a better solution for your needs. The old Class ZZ had a size deviation of 0. 00024". The new Class Z has a size deviation of 0. 00012". Features of this set include . 8330" to 0. 9160" Class Z Gage Pin Set 84 Pieces in 0. 001" increments Size deviation . 0001" Sets are traceable to NIST Boxes and Gages are both marked