The decimal separator of a NumericIndicator should be visualized between the digits. At the moment it takes one position.
You are allowed to customize the size of each position of the numeric indicator like this:
<telerik:NumericIndicator HorizontalAlignment="Center"
VerticalAlignment="Center"
Foreground="Orange"
UseRangeColor="True"
telerik:ScaleObject.RelativeHeight="0.15*"
telerik:ScaleObject.RelativeWidth="0.8*"
telerik:ScaleObject.RelativeX="0.5"
telerik:ScaleObject.RelativeY="0.8"
Value="12345">
<telerik:NumericIndicator.Positions>
<telerik:HexagonalNumberPosition />
<telerik:HexagonalNumberPosition />
<telerik:HexagonalNumberPosition />
<telerik:HexagonalNumberPosition telerik:ScaleObject.RelativeHeight="0.05*" />
<telerik:HexagonalNumberPosition />
<telerik:HexagonalNumberPosition />
</telerik:NumericIndicator.Positions>
</telerik:NumericIndicator>