The Relative Clip Bounds pane determines the size and the location of a clip region for the Brush element on your gauge.
X — This value determines the distance of the clip region of your brush element from the left of the Gauge control.
Y — This value determines the distance of the clip region of your brush element from the top of the Gauge control.
Width — This value determines the width of the clip region.
Height — This value determines the height of the clip region.
Units — This value specifies the unit of measurement for your clip region. The clip region can be measured in pixels or as a percentage of the Gauge control.