#### Working with the Angle Grid

PC-DMIS allows you to view and select angles for the defined wrist by using an angle grid from the Add New Angles dialog box. The angle grid displays all available A-angle positions down the side of the dialog box and the B-angle positions along the top of the dialog box.

A portion of the Add New Angles dialog box showing previously selected AB angles (dark grey) and AB angles inserted before the Add New Angles dialog box is closed (red)

To add new angles by clicking on the grid,

1. Find the row of the A-angle you want to add. Then find the column with the appropriate B-angle.

2. Click the box in the grid where the desired A and B angles intersect. The selected box turns red, and the selected AB angle positions are inserted into the New Angles list box.

To clear a selected AB angle position, simply click one of the red boxes again, PC-DMIS removes the AB angle positions associated with that box from the New Angles list box.

Understanding the Grid Colors

There are four possible grid box colors that you may see when working with the angle grid: dark grey, red, yellow, and green. Probe heads that have enough grid blocks to show the complete range of the probe head's angular adjustment, will only show angle grid boxes in dark grey or red. However, if you're using a wrist device (such as a PHS or CW43L) you may have angles with increments that exceed the number of angle increments used in the angle grid. In these cases PC-DMIS colors the closest matching angle grid location in green or yellow.

| Color | Description
| Dark Grey | A dark grey grid box indicates that the AB angle position already exists in the Active Tip list of the Probe Utilities dialog box. The AB angle perfectly matches the grid box's angle.
| Red | A red grid box indicates that you have specified a new AB angle position using the Add Angles dialog box, but the angle hasn't yet been added to the Active Tip list. The AB angle perfectly matches the grid box's angle.
| Yellow | A yellow grid box indicates that the AB angle position already exists in the Active Tip list of the Probe Utilities dialog box and that PC-DMIS chose the closest matching grid location for the AB angle.
| Green | A green grid box indicates that you have specified a new AB angle position using the Add Angles dialog box, but the angle hasn't yet been added to the Active Tip list. PC-DMIS chooses the closest matching grid location for the AB angle.