Inside Micrometers | McMaster-Carr

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227 Products

Measuring and Inspecting

Inside Hole Micrometers

Inside Hole Micrometers

Find the inside diameter of cylinders and rings

Inside Hole Micrometer Spacing Collars

Inside Hole Micrometer Spacing Collars

Replace the collar on your micrometer to connect extension rods

Inside Hole Micrometer Handles

Inside Hole Micrometer Handles

Screw into your micrometer head to extend its reach for measuring deep holes

Bore Gauges

Insert into a hole and expand the contacts to measure diameter

Inside Hole Calipers

Inside Hole Calipers

Measure hard-to-reach areas, such as internal grooves and slots

Chamfer Gauges

Check the diameter of chamfered edges to make sure they're within tolerance

Countersink Gauges

Countersink Gauges

Catch sizing errors in countersunk holes to keep fasteners from protruding and creating weak points

Inside/Outside Diameter Gauges

Inside/Outside Diameter Gauges

Mount your variance indicator to measure the diameter of rims, grooves, and shallow holes

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)