Sets the length unit to be used when the input is a unitless SAT file. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 23.0.0.0 (23.1.0.0) 
  Since:  2017_subscription_update 
Syntax
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Parameters
- defaultLengthUnit
 -  Type:  Autodesk.Revit.DB ImportUnit  
The length unit to be used for when the input is a unitless SAT file. 
Remarks
 Values ImportUnit::Default and ImportUnit::Custom are ignored. ImportUnit::Centimeter is used instead. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentOutOfRangeException | A value passed for an enumeration argument is not a member of that enumeration |