What is being measured?
Exactly 0.001 metres per millimetre.
The unit relationship is exact. A measured input can still have its own uncertainty.
- Dimension
- length
- Reference value
- 1 mm
- Evidence
- Exact unit definition
- In metres
- 0.001 m
Put the length in perspective
One Millimetre represents approximately 0.0117 card lengths measured end to end. This is a length ratio; it does not calculate how the objects pack or fit.
Millimetre · 0.001 m · too small to see
Metre · 1 m
Foot (international) · 0.3048 m