Volvo STD 101-0001 - Page 26

Standard STD 101-0001
Volvo Group
Version
4
Page
26
b) Tolerance frames
Figure 21 (continued)
e) Identification of restricted area application (integral feature)
When a restricted area of a surface is used as datum feature, this limited area of application shall be
represented on the model using supplemental geometry. The datum indicator can be attached directly to
the surface (see figure 22), to the tolerance frame if, for example, a flatness requirement applies to the
same surface or to a reference line using a leader line that terminates with a dot on the surface.
Figure 22 – Partial surface as datum feature