Dimensioning, Continued
Unique
methods of
dimensioning
Various characteristics and features of parts require unique methods of
dimensioning. These special situations include diameters, radii, rounded
corners and ends, round, slotted, counterbored, countersunk, and
counterdrilled holes, spot-facing, and chamfers.
Diameters
When indicating the diameter of a circular shape, the diameter symbol (
)
precedes all diametral values. When you must show the diameters of a
number of concentric or eccentric cylindrical features, dimension them in a
longitudinal or front view.
Figure 3-26 shows diametral values.
Figure 3-26.—Dimensioning diametral values.
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