DS 2370-3:1995 Measuring Equipment - Limit Gauges - Part 3: Plug Gauges And Spherical Plug Gauges For Iso-Tolerances For 1-500 Mm Nominal Size - Manufacturing Tolerances And Allowed Deviations Defines manufacturing tolerances and allowed deviations for plug gauges and spherical plug gauges for inspection of ISO tolerances for internal dimensions (holes) with nominal dimensions from 1 to 500