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Datum and surface finish symbols

You can insert datum symbols onto your design, drawing sheet, or 3D markupA document type that enables you to annotate and compare different versions of a design. slide. DatumObject that is assumed to be an exact size and shape, and be in an exact location, that is used to locate or establish geometric relationship of other objects. symbols are made semantically, which means they update to changing attachment objects.

Datum symbols appear in the tree and show their attachment objects when selected.

To add a datum symbol

1. Select the Datum Symbol tool .

   Mouse over the faces of your design to preview the eligible annotation planes.

2. Click to attach the datum symbol.

3. Drag and click to place the symbol.

To replace a dimension with a datum

1. Click the Datum Symbol tool .

2. Click the dimension text.

To display the text of an annotation and hide the plane

1. Create two layers, one for notes, and one for the annotation planes.

2. Place the note on one layer and the annotation plane on another layer.

3. Turn off the visibility of the layer that contains the annotation plane.