2011

The symbol is inserted into the MC box for the primary datum reference in
the Geometric Tolerance dialog box.
Datum 2
Creates the secondary datum reference in the feature control frame in the
same way as the primary datum reference.
Datum 3
Creates the tertiary datum reference in the feature control frame in the same
way as the primary datum reference.
Height
Creates a projected tolerance zone value in the feature control frame. A
projected tolerance zone controls the variation in height of the extended
portion of a fixed perpendicular part and refines the tolerance to that specified
by positional tolerances.
Projected Tolerance Zone
Inserts a projected tolerance zone symbol after the projected tolerance zone
value.
Datum Identifier
Creates a datum-identifying symbol consisting of a reference letter. A datum
is a theoretically exact geometric reference from which you can establish the
location and tolerance zones of other features. A point, line, plane, cylinder,
or other geometry can serve as a datum.
Geometric Tolerance Dialog Box | 1057