For zero setting of inside micrometers, three points internal micrometers and bore gages.
Deviation is the difference between the ordered size and the size marked on the setting ring when supplied.
For example, the ordered size is .2”, the size marked on the setting ring when supplied may be .20008″.
setting ring when supplied may be .20008″.

3M 05777, Hookit Soft Interface Pad, 6 x 1/2 x 3/4 inch, 7000028239
Insize 7262-250, OUTSIDE SPRING CALIPER, 10", 6928640319686 