To Create a Datum Point On or Offset from a Coordinate System or Its Axis or a Vertex

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

2. Choose one of the following actions:

◦ To create a datum point on a coordinate system, select the coordinate system in the graphics window or the Model Tree and click OK.

◦ To create a datum point offset from a coordinate system, perform the following actions:

1. In the graphics window, select a coordinate system or a vertex. The selected coordinate system or vertex appears in the References collector.

2. Holding down the CTRL key, select a coordinate system or an axis of a coordinate system in the graphics window. The selected coordinate system or axis appears in the References collector, below the selected coordinate system or vertex.

You can also select a combination of any of the following: • Two coordinate systems • A coordinate system and an axis of a coordinate system • A coordinate system and a straight curve, edge, or axis • A coordinate system and a datum plane or planar surface • A vertex and a coordinate system or an axis of a coordinate system • A datum point and a coordinate system or an axis of a coordinate system |

3. In the Offset type box, select one of the following offset types:

▪ Cartesian—Offsets a coordinate system by specifying the x, y, and z values.

▪ Cylindrical—Offsets a coordinate system by specifying radius, theta, and z values.

▪ Spherical—Offsets a coordinate system by specifying radius, theta, and phi values.

Three-dimensional offset is available only if you select a coordinate system as the second reference. If you select an axis of a coordinate system as the second reference, then you can offset the datum point only along the selected axis. |

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

▪ In the Datum Point dialog box, type the offset value.

▪ In the graphics window, double-click the offset dimension and type a value.

▪ In the graphics window, drag the offset handle to the offset location.

5. Click OK.