'This unit was originally intended to be 1/40,000,000 of the Earth's circumference'
the meter
WEIGHTS & MEASURES: This unit was originally intended to be 1/40,000,000 of the Earths circumference
This unit was originally intended to be 1/40,000,000 of the Earth's circumference
This unit was originally intended to be 1/40,000,000 of the Earth's circumference
WEIGHTS & MEASURES
the meter
WEIGHTS & MEASURES