DIN 2231
DIN 2231 Geometrical product specifications (GPS) - Limit gap gauges and forged gauging members over 3 mm up to 100 mm nominal size
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2008
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2008