Sets units for all dimension types except Angular.
| Type: | Integer | 
| Saved in: | Drawing | 
| Initial value: | 2 | 
| Value | Description | 
|---|---|
| 1 | Scientific | 
| 2 | Decimal | 
| 3 | Engineering | 
| 4 | Architectural (always displayed stacked) | 
| 5 | Fractional (always displayed stacked) | 
| 6 | Microsoft Windows Desktop (decimal format using Control Panel settings for decimal separator and number grouping symbols) |