A - Circular path avoids inside feature
B - Normal path collides with inside feature
C - Probe Hits
D - Probe Path
The Insert | Move | Move Circular option allows you to insert a MOVE/CIRCULAR command at the cursor's location in the Edit window.
When PC-DMIS encounters this command, the probe follows a circular path when it takes the next hit. It moves from one point to another in a circular fashion based on the radius of the feature you are measuring.
By taking a circular path, the probe may avoid colliding with certain features that would otherwise be in the way of the standard straight line path. For example, if you are measuring a hole that has a square pin inside, that pin may block your probe path unless you use Move Circular.
A - Circular path avoids inside feature
B - Normal path collides with inside feature
C - Probe Hits
D - Probe Path
Overall, this command has very specific uses, although using it to measure a pin speeds up measurement somewhat since PC-DMIS doesn't have to move as far away from its last hit.