The main setup disk is used for calibrating and setting up the comparator. Adjustable snapshot gauge and other precision measuring instruments used to inspect parts The master disc is sometimes listed as the setup disc.

Feature

• Class X or Y
• GO, NOGO have bilateral discrepancies.
• Steel 60/62 Rockwell C.
• Comes with a handle at the end.
• All discs are decorated with clear insulation.
• Painted insulation is available by special order.
• The roundness is within half of the tolerance.

Material

• iron
• chrome
• Carbide