1. Draw the top and front orthographic view (view

A).

The metric system is an extremely accurate

universal system of weights and measures. It is based

2. Divide the circle of the base into several equal

on a unit called a meter.

spaces. Divide the arcs at the ends of the oblong

into half as many spaces. Since the transition

piece is symmetrical on a central axis, this may

distance from the earth's equator to its pole. It is a

be done on only half of the top view. Connect

system based on units of ten, making it a very

these division points (view B). Use dotted lines

uncomplicated system with which to work. A meter is

for the diagonals to differentiate them.

39.37 inches long or slightly longer than a yard.

3. Project the division points to the front view and

Adding prefixes to the name of the primary unit of

draw the elements there.

measure, such as micrometer or millimeter, form the

names of metric denominations

4. Draw the true-length diagram for the elements

(view C).

Table 14-1 explains the metric system by showing

nomenclature and giving the English measure

5. Draw an approximation of the surface pattern of

equivalents.

the warped surface by constructing one triangle

after another (view D).

Tables 14-1, 14-2, 14-3, 14-4, 14-5, and 14-6 are

given as a quick reference when solving math-related

problems.

14-36

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