What year did gabriel mouton propose the metric system

Biography

Gabriel Mouton obtained his doctorate in theology in Lyon. However he spent much of his spare time studying mathematics and astronomy.

He took holy orders and spent his whole career in St Paul's Church in Lyon where he was appointed in 1646. Speziali writes in [1]:-

He spent his whole life in his native city, fulfilling his clerical responsibilities and untroubled by any extraordinary events.

What did gabriel mouton invent

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Who is vicar gabriel mouton

What is the metric system based on

Who created the metric system

During his leisure time he studied mathematics and astronomy and rapidly acquired a certain renown in the city. Jean Picard, who also was an abbé, held Mouton in high esteem and always visited him when in Lyon to work on the determination of the city's geographic position.

His most famous work Observationes diametrorum solis et lunae apparentiumⓉ published in 1670 studied interpolation and a standard of measurement based on the pendulum.

Lalande wrote:-

This volume contains interesting memoirs on interpolations and on the project of a universal standard of meas