Meyer LS Steel Class Z Gage Pin Library .0110 - .6250Meyer Class Z Steel Gage Pin Library Make quick and accurate measurements with Meyer Gage Pins. With these Gage Pins, you can measure hole sizes, calculate distances between holes, gage slot widths, check locations, and perform GO NO GO gaging. Meyer's Class Z Gage Pin Libraries are now made to a closer tolerance (0. 0001"), are more accurate, and are a better solution for your needs. The Class ZZ had a size deviation of 0. 0002". The new Class Z has