| 689 mm * | 0.1 cm | = 68.9 cm | 
| 1 mm | 
| Units of measurement | Unit of length | 
|---|---|
| Nanometre | 689000000.0 nm | 
| Micrometre | 689000.0 µm | 
| Millimetre | 689.0 mm | 
| Centimetre | 68.9 cm | 
| Inch | 27.125984252 in | 
| Foot | 2.2604986877 ft | 
| Yard | 0.7534995626 yd | 
| Metre | 0.689 m | 
| Kilometre | 0.000689 km | 
| Mile | 0.0004281248 mi | 
| Nautical mile | 0.0003720302 nmi | 
