"Pair Of Mirrors For Optical Experiments"
This is a pair of articulated mirrors on foot, 58 cm high, from the Napoleon III period. One is convex and the other is concave. Such a set was used in colleges, high schools and universities in the context of scientific education, more precisely in the optical discipline to demonstrate certain physical properties of the path of light rays. The base is 22cm in diameter and the mirror is 20cm in diameter. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato