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Ring gauges DIN 2250 high-precision measurements - microtool
Setting ring gauge DIN 2250-C Ø 180 mm - PraezisionsTools.com
DIN 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 (Foreign Standard)
MG Gauges
Ring gauges DIN 2250 high-precision measurements - microtool