Marble meters installed in Paris

Marble meter standards were installed in Paris starting in 1796 in public places to help citizens learn about the new metric system. Sixteen such markers were placed across the city, but only one remains in its original spot: the one at 36 rue de Vaugirard in the 6th arrondissement, embedded in the wall of a private mansion near the Senate.

Metric system defined in 1791

The meter was defined by the Constituent Assembly in 1791 as one ten-millionth of the distance from the North Pole to the equator along the Earth’s surface. The law officially recognizing the meter as a standard length was passed in 1795, and the Temporary Agency for Weights and Measures then ordered 16 marble meters to be placed in visible locations across Paris to familiarize the public with the new unit.

Marble meters as educational tools

The marble meters were not used to calibrate instruments but to help the public understand the new unit of measure in relation to traditional local units. The one at 36 rue de Vaugirard still retains the exact length of a meter and allows direct comparison with the revolutionary standard. The building may have housed the Agency for Weights and Measures at the time, which likely influenced the choice of location.

Restoration of Place Vendôme meter

The meter at 13 Place Vendôme, now on the facade of the Hôtel de Bourvallais, which houses the Ministry of Justice, was moved, restored, and reinstalled in 2021. The Ministry describes it as a seemingly insignificant piece of marble with great historical importance. It is one of two original Parisian meters from the 1790s still in existence, with another preserved in Sceaux, Hauts-de-Seine.

Original meters still viewable in Île-de-France

The marble meter at 36 rue de Vaugirard is the only one remaining in its original location. Three addresses within Île-de-France allow visitors to see a revolutionary meter: 36 rue de Vaugirard (Paris 6th), 13 Place Vendôme (Paris 1st), and 68 rue Houdan (Sceaux). The exact original location of the Place Vendôme meter before its 2021 restoration is uncertain, with 1848 often cited but no definitive sources confirming this.