TM 9-243
TYPES AND USES - Continued
SLIDE CALIPERS
Slide calipers can be used for measuring outside and
inside dimensions. Graduations are in inches, fractions,
or millimeters. As shown above, one side of the caliper is
used to measure outside (1) and the other side is used to
measure inside (2) dimensions. Stamped on the
frame (3) are the words “IN’: and “OUT” (4). You use
them when taking inside and outside measurements.
The other side of the caliper is used as a straight
measuring rule. If necessary, see chapter 3 of this man-
ual for reading scales and rules.
VERNIER CALIPERS
OUTSIDE
INSIDE
Vernier calipers work like slide calipers. As shown
above, vernier calipers can make very accurate outside
or inside measurements. A vernier caliper is used by
loosening the two locking screws (1) and (2). This allows
the movable jaw (3) to move along the rule until desired
position is obtained. The locking screw (1) is then
retightened securing the movable jaw (3). Any fine
adjustments to the vernier scale (4) are then made using
adjustment control (5). Locking screw (2) is then
secured and vernier caliper is ready to read.
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