Mitutoyo Steel Setting Ring 3mm

This steel setting ring is used to accurately and quickly set inside micrometers, dial gages and Holtest. If the setting ring is used properly, it can be used for calibration. 

• Nominal size = 3mm
• Dimensions 
  • ØD = 25mm
  • ØE = -
  • T = 7mm
• Type = A
• Tolerance between nominal size and actual diameter = +/- 10µm
• Uncertainty of unmarked diameter value = +/- 1.5µm
• Roundness/cylindricity = 1µm
• Distance from side face H = 1.7mm
• Size warranted calibration surface K = 3.6mm

 Mitutoyo Part # 177-248
NOTE: This item is not returnable.