#### Probe Length Refinement

The Set Probe Length screen calculates the length of the probe's shank. This can be done anytime.

1. Select Probe from the main screen.

2. Select Probe Length Refinement. The Set Probe Length screen appears.

3. Select a work offset from the Work Offset list.

4. Under Parameters area, in the Target box, type the location of the surface, relative to the current work offset.

5. Type a value for the Prehit Distance in the Motion Parameters area.

6. Position the probe over the surface.

7. Press the Read Probe Position soft key.

8. Press Execute . The probe will measure the surface at the target value. Based on the touched location and the location of the probe spindle in 3D space offset from the surface, NC Gage can then calculate the length of the probe. The measured Z value and the probe length will appear in the read-only Measured Z and Measured Length boxes.

9. Press Confirm to save the probe length for use with the calibration.

All the other items on this screen contain read-only information about the probe.

Navigation Bar Soft Keys for this Screen:

| Backward When enabled, this soft key scrolls back to any additional buttons available on the first page for this screen. |  | Select Measurement Face This soft key determines the direction of probing and the location of the clearance moves for the feature. You can press this multiple times to choose a different measurement face. Available faces are: X+, X-, Y+, Y-, Z+ and Z-.
| Read Current Position / Next Step This soft key reads the current probe position and goes to the next step of the current procedure. |  | Return to Previous Step This will remove the last learned probe positions.
| Work Offset This soft key selects the named work offset from the list of offsets. Pressing this again will select the next work offset from the list. |  | Execute This soft key causes the machine to measure the feature. It will only be available after all the necessary probe positions to identify the feature location have been learned (or typed in). It lets you make changes and test run the feature before committing the feature to the program.
| Cancel All Steps / Abort This soft key stops and resets the current operation. If learning a feature, it removes all the learned probe positions. |  | Select a Probe If the Select Probe screen isn't the current screen then this soft key accesses the Select Probe screen. If the Select Probe screen is already visible then this soft key selects scrolls through each probe in the Probe list with each touch of the soft key.
| Help This soft key accesses the NC Gage help file. |  | Return This soft key returns the view up one level to the previous screen.
| Forward When enabled, this soft key scrolls forward to any additional soft keys available on the second page for this screen. |  |