# Action Bar

The Action Bar is used to control the instrument.

1. **Measure Button**  
   Click here to start a measurement- results will be recorded in the measurement table. A "greyed out" measurement button indicates the license for this module is not present or expired.
   [Install a new Aesthetix License](Install-Aesthetix-Licenses.md)



2. **Calibration**  
   Press to begin Calibration

3. **Interactive Measurement Button**  
   Pressing this button will start an interactive measurement, this includes live views from the Aesthetix camera to allow for sample alignment and adjustment of measurement parameters.  
   Interactive measurement is not available for certain modules or instruments- this button will not be present in the Action Bar

4. **Table View**  
   Press this button to toggle the table view.

![Actions bar](Actions bar.png)