Figure 190. Micrometer Caliper, Cutaway View.

Use And Care Of Handtools And Measuring Tools
Page Navigation
241

MICROMETER CALIPER, CUTAWAY VIEW.

1 A stainless steel frame to resist corrosion or tarnish.

2 A ratchet for applying a constant measuring pressure.

3 A special vernier scale for reading tenths of thousandths

of an inch.

4 A clamp ring or locknut for clamping the spindle to hold a

setting.

5 Cemented carbide tips on the measuring anvils to reduce

wear.

(b) The frame can be smaller to the extent that the range of the

caliper is only 0 to 1/2 inch or 0 to 13 millimeters, or it can be larger so

that the range is 23 to 24 inches. The head has a constant range of 0 to 1

inch.

The shape of the frame may be varied to adapt it to the physical

requirements of some types of work. For example:

1 The frame back of the anvil may be cut away to allow the

anvil to be placed in a narrow slot.

2 The frame may have a deep throat to permit it to reach into

center sections of a sheet (sheet metal or paper gage).

241

Index