Optional
Scale factor to convert MapConversion values to metres. Derived from IfcProjectedCRS.MapUnit (e.g. 0.001 for mm, 1 for m). If undefined, the project's length unit applies (IFC spec default).
Scale factor to convert MapConversion values to metres. Derived from IfcProjectedCRS.MapUnit (e.g. 0.001 for mm, 1 for m). If undefined, the project's length unit applies (IFC spec default).