### Step 5: Calibration

Calibration is critical for defining the probe tip offset and effective radius for your system.

Rotary Table calibration may optionally be performed to increase the accuracy of the measurements when the tables are used as part of a measurement sequence.

Press the Probe soft key from the Main screen to access the available calibration options.

The Probe options toolbar has the following options available:

Press the Select a Probe soft key to select or define a new probe to be calibrated.

The following Probe Calibration Options are available:

- Press the Sphere Calibration soft key to calibrate the probe in your system using a Calibration Sphere.

- Press the Ring Calibration soft key to calibrate the probe in your system using a Calibration Ring.

- Press the Set Probe Length soft key to calculate the length of your probe

The following Rotary Table Calibration Options are available:

- Press the Rotary Table Calibration soft key to calibrate the rotary table(s) in your system.

- Press the Write Rotary Calibration Data To Control soft key to write rotary table calibration data to a controller.

- Press the Find Sphere Tool soft key from Rotary Table Calibration screen to define the sphere being used to calibrate the rotary table(s) in your system.