Fig Datum Feature Symbol

is not sufficient space within the compartment, the area size may be placed outside and connected to the compartment by a leader line. See Fig. 4-29.

3.3.4 Basic Dimension Symbol. The symbolic means of indicating a basic dimension is shown in Fig. 3-7.

3.3.5 Material Condition Symbols. The symbolic means of indicating "at maximum material condition" and "at least material condition" are shown in Fig. 3-8. The use of these symbols in local and general notes is prohibited

3.3.6 Projected Tolerance Zone Symbol. The symbolic means of indicating a projected tolerance zone is shown in Fig. 3-8. The use of the symbol in local and general notes is prohibited.

3.3.7 Diameter and Radius Symbols. The symbols used to indicate diameter, spherical diameter, radius, spherical radius, and controlled radius are shown in Fig. 3-8. These symbols precede the value of a dimension or tolerance given as a diameter or radius, as applicable. The symbol and the value are not separated by a space.

3.3.8 Reference Symbol. The symbolic means of indicating a dimension or other dimensional data as reference is by enclosing the dimension (or dimensional data) within parentheses. See Fig. 3-8. In written notes, parentheses retain their grammatical interpretation unless otherwise specified.

3.3.9 Arc Length Symbol. The symbolic means of indicating that a linear dimension is an arc length measured on a curved outline is shown in Fig. 3-8. The symbol is placed above the dimension.

Datum Feature

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