| Description: Units_of_Length is a magnitude of length. |
| | Unit Id |
| | AU | The abbreviated unit for Units_of_Length is AU (astronomical unit) |
| | Angstrom | The abbreviated unit for Units_of_Length is Angstrom |
| | cm | The abbreviated unit for Units_of_Length is cm |
| | km | The abbreviated unit for Units_of_Length is km |
| | m | The abbreviated unit for Units_of_Length is m |
| | micrometer | The abbreviated unit for Units_of_Length is micrometer (10-6 m) |
| | mm | The abbreviated unit for Units_of_Length is mm (10-3 m) |
| | nm | The abbreviated unit for Units_of_Length is nm (10-9 m) |