Meter (m)
The meter (m) is the SI base unit of length and the international standard used worldwide.
- Origin
- Originally defined as one ten-millionth of the distance from the equator to the North Pole, it is now defined by the distance light travels in vacuum in 1/299,792,458 of a second.
- Where it is used
- Used for building grids, floor levels, spans, site dimensions and virtually all scientific and engineering work.
- Relation to SI
- The meter is the SI base unit; every other length unit here is defined from it.