Geometrical Datum

Access: Open this function from one of the following locations:

Click the button in the toolbar.
Select Symbols > GD&T > Geometrical Datum from the menu bar.
Select Drafting Symbols > Geometrical Datum on the popup menu (right-click the graphics area).

Create a datum reference to attach to a point on the screen or to one of the following:

An edge of a planar surface
A non-planar feature of size
An extension line off the datum feature surface
On a size dimension, placed offset to the dimension arrows
On a dimension line inline with the dimension arrows
On a leader arrow of a size dimension
As one half in an open-ended size dimension (inline with arrow)
Off a feature control frame that is applied to a surface
Off a feature control frame that is applied to a feature of size

The Geometrical Datum dialog displays
the relevant labels and values:
Click a dialog item for an explanation:

Below is an example of the symbol:
Click the labels for an explanation:

See Entity Overview for a general description.

Creating a geometrical datum

InvokeInvoke (for more, click Access at the top of this Help topic) the Geometrical Datum function.

Pick the location of the geometrical datum start point.

Pick a point in the graphic area to position the geometric tolerance and exitexit(middle mouse button).

Pick a point on the screen to define the new position of the entity (The entity will jump to the picking point). Shoulders are automatically added to non-horizontal geometries but can be added/removed from horizontal geometries by clicking the Straight/Shoulder toggle option in the popup submenu.

Enter a character in the text box.

To complete the current operation and remain in the dialog, press the Apply button or exitexit(middle mouse button).
To exit the function, press the Close button.

Notes:

Right-click the entity itself to access the entity-specific (for editing) and general functions from the popup submenu.
Double-click the entity to edit it.
Creating a PMI geometrical datum symbol (in the Modeling environment) is very similar to creating a geometrical datum symbol in the Drafting environment, even though modeling is a 3D environment and drawing is a 2D environment.
See the Symbol notes for additional information.