#### Setting Probe Depth on a Cone

PC-DMIS offers two procedures that allow you to set the probe depth on a cone. See "Measuring Features Off-line" for additional information on the following procedures.

Three-Dimensional Procedure

To set the precise depth on a conical surface, PC-DMIS requires that two CAD circles (or arcs) on the cone be displayed. It is suggested that two views of the surface be used for this procedure, but it is not required. (Isometric views are also a viable way of setting probe depth on a cone.)

1. Set the precise depth for one end of the cone using one of the circles. PC-DMIS displays this message: “Precise Depth Set on.”

2. Next, set the precise depth for the other end of the cone using the second circle. PC-DMIS displays this message: “Precise Depth set on Cone.”

Once the precise depth is set, all the points that are generated will snap on to the conical surface. Single hits can be taken on cones by holding down the left mouse button. Clicking the left mouse button prompts PC-DMIS to take equally spaced hits around the cone.

Two-Dimensional Procedure

To set the precise depth on a conical surface in two-dimensional drawings, PC-DMIS requires that the length between the two circles (as described above) be defined. Because these circles are at the same depth, it is necessary to also define the precise depth of a line. This can be either a straight line, or a line on the edge of the cone. After setting the precise depth on the circles, hold down the right mouse button next to the line that will be used for the length.

Once the precise depth is set, all the points that are generated will snap on to the conical surface. Single hits can be taken on cones by holding down the left mouse button. Clicking the left mouse button prompts PC-DMIS to take equally spaced hits around the cone.