USE/CARE OF HANDTOOLS & MEASURING TOOLS - OD1621 - LESSON 3/TASK 1
FIGURE 156.
AMERICAN NATIONAL COARSE AND
FINE THREAD DIMENSIONS AND
TAP DRILL SIZES.
c. Standards of Wire and Sheet Metal. Sheet metal, strip, wire, and
tubing are produced with thickness diameters or wall thicknesses, according
to several gaging systems, depending on the article and metal.
This
situation is the result of natural development and preferences of the
industries that produce these products.
No single standard for all
manufacturers has been established, since practical considerations stand in
the way of adoption. In
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