• The anvil and the spindle have a blade for measuring the groove diameter of shafts, keyways and other hard-to-reach areas.
• With ratchet stop for constant force.
• Non-slip grip finish (digital models).
• Non-Rotating Spindle Type
• Speedy spindle feed of .4"/10mm /rev. (Quickmike type).
• With a standard bar except 0 - 1" and 0 -25mm model.
• Supplied in fitted plastic case.

The Mitutoyo 422-231-30 Digimatic Blade Micrometer uses a ratchet stop to deliver a constant measuring force. The anvil and spindle include a blade that measures the groove diameter of shafts, keyways and more.