MICROMETERS AND THEIR USE

MICROMETER CALIPER

The first thing that you should know is how to read measuring tools such as micrometers and calipers.
These are the handiest to use and will give you accurate measurements of your work

There are many types, and I prefer the one with the dial indicators on it. You will need two sizes of
calipers should be provided. One set should be about 4" inch, and the other set 8 inch. They should be
of the spring-opening type with screw adjustment. The quick-opening spring nut is a good time saver, as
it is possible to open the nut and make a rough adjustment of the calipers without having to run the nut
slowly along the thread.

MICROMETER DEPTH GAGE

A micrometer depth gage is used to measure the depth of such work as holes, slots, recesses, and key
ways. The tool consists of a hardened, ground and lapped base combined with a micrometer head.
Measuring rods with individual length adjustment are inserted through a hole in the micrometer screw
and brought to a positive seat by a knurled nut. The screw has a 1" movement.