Series: 167
Length: 125 mm
Diameter: 7.9 mm
Accuracy: +/-3 to +/-3.5 um (depending on source)
Flatness: 0.3 um
Parallelism: 2 um
Material: Hardened Steel
Finish: Micro-lap finish
Handle: Heat-insulating to prevent thermal explosion
Purpose: Used for zero-point setting of outside micrometers