The meter was invented during the French Revolution, which took place between 1789 and 1799. It was a time when all the systems (political, religious, measurement) were upset.
Before that, people used to measure distances with “toises” and “lieues”. 1 toise was worth about 2 m and 1 lieue was worth about 4 km. The weight unit was the “livre”. A livre was worth about half a kg.
At the beginning, the meter was defined as 1/40,000,000 of the perimeter of the Earth. The gramme, which was invented at about the same time, was defined as the weight of 1 cm3 (cube centimeters) of water.
Since then the definition of the meter has changed, and it is now a very scientific one.
So, at the beginning, to get people accointed with their new measurement system, the Revolutionaries (the leaders of the Revolution) had 16 marble meters displayed in the streets of Paris. Only two remain, one of which is still in the street, 36 rue de Vaugirard, in front of the Senate.
