The AttributeUnit can be one of:
| Constant | Description | 
|---|---|
Enums. | (0) An unknown unit. | 
Enums. | (1) Inches. | 
Enums. | (2) Feet. | 
Enums. | (3) Yards. | 
Enums. | (4) Miles. | 
Enums. | (5) Millimeters. | 
Enums. | (6) Centimeters. | 
Enums. | (7) Decimeters. | 
Enums. | (8) Meters. | 
Enums. | (0) Kilometers. | 
Enums. | (10) Nautical miles. | 
Enums. | (11) Decimal degrees. | 
Enums. | (12) Seconds. | 
Enums. | (13) Minutes. | 
Enums. | (14) Hours. | 
Enums. | (15) Days. |