2008DIN 2250-1:2008-10 Geometrical product specifications (GPS) - GO ring gauges and setting ring gauges - Part 1: From 1 mm up to 315 mm nominal diameter
2008DIN 2250-1:2008 Geometrical product specifications (GPS) - GO ring gauges and setting ring gauges - Part 1: From 1 mm up to 315 mm nominal diameter
1989DIN 2250-1:1989 General-purpose GO ring gauges and setting ring gauges for pneumatic length measuring instruments from 1 mm up to 315 mm nominal diameter