Shape   |  
 The length unit to be used if not specified when the input is a unitless SAT file. 
 Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
 If the input is a unitless SAT file then this length unit will be used as a backup.