Plane Scanning with Polylines
Speed
If your probe is scanning perpendicular to the surface, set the speed slower than a diameter scan. This is because the stylus may chatter or squeak, causing unwanted noise in the measurement.
Single points
Check this box to have the probe touch individual points one at a time instead of scanning. Make sure the number of points is much lower than you would have for scanning, otherwise you will be waiting all day. This option is handy when measuring large surfaces, and equally-spaced touch points are preferred.
Show all points
Click this button to show all the polyline corner points, which also allows you to adjust their position. Just click and drag the base of the yellow arrow to move them.
Sometimes you won’t be able to drag the polyline points if:
- You are trying to move the points outside the boundaries of the plane
- The polyline is on a separate surface that is separated from the main surface
- Your graphics card is not good enough
- Your Calypso version is ancient
Trash button
Deletes the last point, indicated by the bottom row of coordinates in the green box. Use the Trash icon if you accidentally add a point.
Edge deviation
Think of the Edge deviation as a “Corner radius.” When the probe approaches a sharp corner in the polyline scan, it will round off the corner by a radius equal to the Edge deviation. See the picture below, where the green line marks the actual probe path. Each corner of the green scan path has a 0.100” radius.
You should reduce the “Edge deviation” value when you scan a small surface, so the corners will not be rounded off excessively. When you scan a large surface, increase the Edge deviation so the probe does not have to slow down too much on the corners.
