Marc Francois Louis Secrétan (1804 – 1867), professor of mathematics in Lausanne settled to Paris in 1844 where he became a partner of the instruments maker Lerebours. The enterprise was continued by his sons and after 1955 by thirds.
Micrometer
Marc Francois Louis Secrétan (1804 – 1867), professor of mathematics in Lausanne settled to Paris in 1844 where he became a partner of the instruments maker Lerebours. The enterprise was continued by his sons and after 1955 by thirds.