TM 9-243
Chapter 7 MICROMETERS
HOW TO CHOOSE AND USE THEM
The “Types and Uses” section provides you with a list of
the types of micrometers. These pages should help you
select the right micrometer for the job.
The “Reading Micrometers” section tells you how to
read the different varieties of micrometers. By becoming
familiar with the procedures you will learn to make accu-
rate measurements.
INDEX
Item
Page
TYPES AND USES
. . . . . . . . . . . . . . . . . . 7-2
Outside micrometers . . . . . . . . . . . . . . . . . . 7-2
Inside micrometers
. . . . . . . . . . . . . . . . . . . 7-2
Depth micrometers. . . . . . . . . . . . . . . . . . . . 7-2
SELECTING PROPER MICROMETER . . 7-2
READING STANDARD MICROMETER
. 7-4
Standard micrometers . . . . . . . . . . . . . . . . 7-4
Vernier micrometers
. . . . . . . . . . . . . . . . . 7-5
Metric micrometers
. . . . . . . . . . . . . . . . . . . . 7-6
CARE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
7-1
