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.
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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