Lathes Page: 17
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the scribing of lines on work. To set, to the proper dimension, the
curved caliper leg is hooked over the end of the rule and the pointed
leg adjusted to the desired dimension (fig. 13).
FIGURE 12.-Using inside caliper.
f. The vernier caliper is a beam caliper with jaws at right angle to
the beam and is used for taking either inside or outside measurements.
This caliper is fitted with a vernier scale which permits measurements
to within 0.001 inch and is illustrated in figure 14 Q. There are two.
FIGURE 13.-Setting hermaphrodite caliper.
leading systems of graduation used on vernier calipers. The beam
scale of one type is divided into 1/50, '/lo, 1/2 inch, etc., the smallest
divisions being equal to 0.020 inch. Twenty divisions on the vernier
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United States. Army. Air Corps. Lathes, book, November 29, 1940; Washington, D.C.. (digital.library.unt.edu/ark:/67531/metadc96655/m1/19/: accessed April 27, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.