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″.
Related products
Measuring/ Inspection Instruments
Insize 4120-12N, METRIC THREAD RING GAGE, NO GO, M12x1.75, 6928640341786
$48.09
Measuring/ Inspection Instruments
Insize 4190-11H16, CERAMIC STANDARD BALLS, 11/16″, 6940561969832
$33.27
Measuring/ Inspection Instruments
Insize 4120-11N, METRIC THREAD RING GAGE, NO GO, M11x1.5, 6928640341779
$53.81

3M 31682, Cubitron II Net Disc Roll, 180+, 3 in, 7100248984, 50 Discs/Roll
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
Dynabrade 15101 Tension Arm (for Mini Dynafile II)
3M 22395, Roloc Disc 361F, 60 YF-weight, TR, 3 in, Die R300V, 7000045098
3M 31685, Cubitron II Net Disc Roll, 320+, 3 in, 7100248985, 50 Discs/Roll
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
3M 72534, Scotch Removable Clear Double-Sided Mounting Squares 859S, 11/16 in x 11/16 in (1.7 cm x 1.7 cm), 7100241756 
