"Bion - Brass Protractor - C. 1700"
Semi-circular brass protractor signed "N Bion à Paris", that is to say Nicolas Bion active in Paris between around 1680 and 1733. Nicolas Bion is certainly, thanks to the publication of his works on globes and spheres, astrolabes and mathematical instruments, the most famous and famous manufacturer of scientific instruments of the period circa 1700. The protractor is divided into two times 0-180 degrees. Beautiful and large signature. 11x7.2cm. Note, two posterior holes in the instrument. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato
