Gets or sets the offset of the tick marks from the scale arc.
A Single value that specifies the offset of the tick marks from the scale arc, in relative coordinates.
The ShapeOffset property's values are measured from the scale arc, in relative coordinates. The value of 0 means that the tick marks are positioned directly on the arc scale. If a negative value is assigned, the tick marks are moved inwards. If a positive value is assigned, the tick marks are moved outwards.
See Coordinate System, to learn about relative coordinates.