Select Major Tick Marks on the Radial Scale Properties dialog box to define the appearance of tick marks on the scale of an individual radial gauge. Major tick marks define detailed values between intervals on the scale of a gauge.
By default, the gauge calculates the intervals automatically based on the minimum and maximum of the scale. If you specify an interval, this value will be used to determine how many tick marks are on the gauge. An interval offset is a constant value that is added to the interval on the scale. For example, suppose your scale goes from 0 to 100, with an interval of 10. This means major tick marks will be shown at intervals of 10 starting at 0, for example 0, 10, 20, and so on. If the interval offset is 5, major tick marks will be offset from their original position by a value of 5. This means major tick marks are displayed at 5, 15, 25, etc.