Technical Data:
Optical parallels
Check the flatness and parallelism of measuring faces of micrometer
Flatness of A and B: 0.1um
Parallelism between A and B: 0.6um
Applicable micrometer: 0-25mm
Parallels included (b): 15.62mm, 15.75mm, 15.87mm, 16.00mm

Dimensions:
D=30mm