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 3206-12, OUTSIDE MICROMETER WITH INTERCHANGEABLE ANVILS, 6-12", 6928640327315
3M 26325, PPS Series 2.0 Spray Cup System Kit, Large (28 fl oz, 850
mL), 125 Micron Filter, 7100134637
3M 55618, Cloth Belt 777F, P120 YF-weight, 1/8 in x 18 in, Fabri-lok, Full-flex, 7010360356, 200 per case 