#### IJK Surface boxes

This is a user supplied I, J, K normal vector. The I, J, K should always point away from the surface. After the new value is created, PC-DMIS will normalize the vector, making its length one unit. This vector is used for probe compensation. PC-DMIS will display a corresponding colored arrow showing the surface vector.

If you can't see the vector arrow or it appears too small, try changing the value in the Pt. Size box in the Analysis area. Setting Pt. Size to 0 will generally set both the point and the arrow to a desirable size.

For Vector Point, Surface Point, and High Points, the IJK Surface boxes display the approach direction for the hit that was taken to create the auto feature.
For High Points, after execution, the IJK Normal Vector will display the approach vector for the high point in the current work plane

For Circle, Cylinder, Sphere, and Cone Features, the IJK Surface boxes define the feature centerline. A cone's vector is very important. The normal vector of a cone feature is the direction of the cone from its tip to its base. The height and depth of a cone are always relative to this vector.

For Square Slot, Round Slot, Ellipse, and Notch Features, the IJK Surface boxes define the surface normal vector of the plane that the feature lies in (the plane parallel to the feature).

For a Plane feature, the IJK Surface boxes define the approach direction for the plane's hits.

For a Line feature, the IJK Surface boxes help define the edge for the auto line hits. Specifically, it defines the surface perpendicular to the surface on which the hits for the line are taken. In other words, it is always perpendicular to the edge vector. See "Example of Auto Line Vectors".

Icon | Description
| Find Vectors
| Flip Vector
| Use Thickness
| Use Probe Vector