Miniature drum furnace microscope attributed to Bertand of Paris, circa 1860-70

Description

A very good example of the diminutive "Furnace" Drum microscope, apparently first popularized by Bertrand of Paris about 1839.
It is very small and its small size makes it a bit difficult to use; for that reason its base dovetails into a slot on the top of its box.
In this position, on the box, the entire assembly closely resembles an old furnace (as seen below), hence the name.
The microscope is complete and in fine condition with its eyepiece, its objective lens, its original mirror, a twezeer and one small slide.
The case is also in excellent condition.
Microscope : 7,5 cm / case :
8,6x5,3x4 cm