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 20905, PSA Cloth Disc 348D, P180 X-weight, 2 in x NH, Die 200P, 7000118876
Standard Abrasives 726027, A/O C1 Straight Precision Cartridge Roll, 1/2 in x 2-1/2 in x 1/4 in 180, 7100098750
3M 59803, Hand-Masker Film Blade FB12-SC, 12 in (30.4 cm), 7100283144
Insize 6140, DEPTH BASE ATTACHMENT, suitable for calipers with beam width (w) .630", 6928640303579
3M 26137, PPS Series 2.0 Adapter, Type S41, Trapezoidal Thread - QCC, 7100135947
3M 02140, Fibre Disc Backup Pad, TN Quick Change , 4-1/2 in x 5/8-11 Internal, 7000045746
3M 28476, Disc pad Hub, 2-1/2 in 5/8-11 Internal Low Profile, 7000045288
3M 26458, PPS Series 2.0 Universal Shaker Core, 7100161512
Air Turbine Tools 201SV - 3mm Straight Hand Tool Series with Brake, 50,000 RPM, 32155
Dynabrade 53652 3/8"-24 Female 5/8"-11 Male, 1-1/2" Length 