Data Management Capabilities > Managing Part Structures > Windchill Options and Variants Capabilities > Creating and Managing Enterprise-wide Definitions > Managing Options in the Option Pool > Options and Choices > Overriding the Units of Measure for Options with Numeric Values
  
Overriding the Units of Measure for Options with Numeric Values
You can specify different display units for entering the values for the choices with numeric values. The default units are set for the site. The default measurement system is set by the preference Measurement system.
To override the default units for entering value for numeric choices:
1. Right-click an option in the option pool and click Edit.
2. In the Edit window, click Next to go the Display Units step.
3. The Display Units table lists the measurement systems defined for the site. The default system is marked with *. Enter the units that you want to use for the selected measurement system. For example, if the default unit for the SI measurement system is meter, you can specify to use “mm” (millimeters) when entering values for this option.
Once the default unit of measure is overridden by another unit, Windchill converts existing numeric values of the choices associated with that option to its equivalent in the new unit of measure. For example, if “km” is overridden by “m”, then all numeric values previously shown in “km”, displays the equivalent numeric values in “m” using the conversion formula 1 km = 1000 m.
For information about entering values in Windchill, see Supported Unit Strings.