To Create a Datum Point Offset from Another Point

1. Click Model, click the arrow next to Point, and click Point. The Datum Point dialog box opens.

2. In the graphics window, select a datum point or vertex. A new point is added at the selected location.

3. Define the offset direction by holding down the CTRL key while you select a direction reference from the following geometry:

◦ Datum plane or planar surface—Drag the point's handle normal to the selected reference.

◦ Straight edge, straight curve, datum axis or coordinate system—Drag the point's handle parallel to the selected reference.

◦ Coordinate system—Select a coordinate system for a three-dimensional offset, or select an axis (x, y, or z) of a coordinate system along which to offset the point.

• Three-dimensional offset is available only if you select a coordinate system as the direction or second reference. Select one of the offset types in the Offset type box: ◦ Cartesian—Offsets from a coordinate system by specifying the x, y, and z values. ◦ Cylindrical—Offsets from a coordinate system by specifying radius, theta, and z values. ◦ Spherical—Offsets from a coordinate system by specifying radius, theta, and phi values. • If you select an axis of a coordinate system as the direction or second reference, then you can offset the point only along the selected axis. |

4. To set the offset distance, perform one of these actions:

◦ In the graphics window, drag the offset handle.

◦ In the graphics window, double-click the offset dimension and type the offset value

◦ In the Datum Point dialog box, type the offset value in the Offset box.

5. Click New Point to add more points, or click OK.