Alexis-Marie Rochon
1741 - 1817
The Abbé Rochon studied optics at the Royal Cabinet de Physique at Passy, near Franklin's home. Thomas Jefferson also knew Rochon well during his tenure in Paris.

Jefferson owned a micrometer or telescope, which he said had been given by Rochon to Franklin, by Franklin to Hopkinson, and by Hopkinson to him. That instrument is now in the collections at Monticello.