Machining Fundamentals
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4.3.1 Reading an Inch-Based Vernier Scale
These measuring tools are available with either
25-division or 50-division Vernier plates. Both plates
can be read to 0.001″.
On measuring tools using the 25-division Vernier
plate, every inch section on the beam is graduated
Figure 4-22. Many instruments are equipped with a Vernier
scale. A—Height gage. B—Depth gage. C—The digital readout
on this type of height gage serves the same function as a stan-
dard Vernier scale. (L. S. Starrett Co.)
Figure 4-23. Gear tooth Vernier calipers are used to measure
gear teeth, form tools, and threaded tools. (L. S. Starrett Co.)
A
B
C