Polarizing microscope (lacquered brass) in fitted mahogany case with oculars and objectives. Main focus by rack and pinion and fine focus by thumbwheel. Circular rotating stage with 360-degree scale and x-y table. The hinged analyzer (Nicol prism) swings into a slot in the body tube. The mechanical coupling of objective and stage eliminates the necessity for optical centering. Height 41 cm
Signed on the backpiece: "Nachet à Paris" and marked: "G.P." "53". Ca. 1910.
Note: the spring of the objectives holder is a later replacement for a U-shaped leaf spring.