Technical Data:
Setting standard for external screw thread micrometers
Made of hardened steel
Thread angle: 55deg
Length L: 50mm
Diameter d: 7.8mm
Accuracy: +/-3um
Deviation between ordered size and marked supplied size: +/-20um

Dimensions:
L=50mm
d=7.8mm

Remark:
Example from catalogue: ordered 25mm standard may be marked 25.015mm when supplied
When pitch <0.4mm or >63.5TPI, setting standards cannot be used to set zero; use a calibrated workpiece instead
Tips for trapezoidal/ACME thread are also available