The scale degree is shown at the outer ring of the visual field. The scale can be changed with hotkeys and buttons.
If the current scale does not display all measured points, the degree number turns red and shows the required zoom direction with angle brackets.
Zoom buttons: The scale is changed in steps of 5 degrees
Keys CTRL and + (plus): Enlarge (zoom in) in steps of 5 degrees. Only the plus key in the number pad works
Keys CTRL and - (minus): Downsize (zoom out) in steps of 5 degrees
Key 1: The scale is changed to 10°
Key 3: The scale is changed to 30°
Key 6: The scale is changed to 60°
Key 9: The scale is changed to 90°
Key Z (or Menu: View > Zoom): The Zoom dialog appears. The input field allows a change in steps of 1 degree. Best fit is the scale that shows all test points.