PRECISION MEASURING AND GAGING - OD1642 - LESSON 1/TASK 2
6 Number of lines visible
between the NO. 20 and
the thimble edge (2)......... 2 = 2.0mm
7 The line on the thimble
that coincides with or
has passed the revolution
or long line in the
barrel (3)................... 36 = 36/100 (.36)mm
Measurement reading.......... TOTAL 22.36mm
FIGURE 39.
READING A METRIC MICROMETER.
60
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