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″.

Insize 7126-6, RIGID RULE, 6", 6928640385186
3M 5680, Disc Pad Holder, 3M 915, 5 in x 1/8 in x 3/8 in 5/8-11 Internal, 7000120889
3M 07502, Scotch-Brite Molding Adhesive and Stripe Removal Disc, 07502, 6 in x 3/8 in, 7000045950, 8 discs per bag 