In its basic form, a micrometer is C-shaped with a fixed anvil on one end of the open C and a movable spindle on the other.

Mechanical micrometers are instruments for precision dimensional gaging consisting of a ground spindle and anvil mounted in a C-shaped steel frame. They are available in Vernier scale, digital and ...

Outside micrometers are used for measuring the thickness or outside diameter of small parts or fittings with high accuracy. Similar in appearance to a C-clamp, the ...