ISO 10303-214:2010(E)
A Datum_target_callout is a type of callout that is used to denote points, lines, and surfaces of contact, on a part, which are used in establishing a reference datum. The callout contains an alphanumeric designation and, where applicable, a specification of the diametrical size of the target area.
EXAMPLE The bottom view in Figure 25 shows three datum target points and their associated datum target symbols.
A Datum_target_callout is a type of Draughting_callout.
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