French Brass Aquarium Microscope
Having a foot that is similar in design to that used by Nachet, this brass microscope was probably used to view events in aquaria. The model illustrated below was redrawn from photographs of the original microscope, which was photographed and described by Gerard Turner in his excellent catalog of microscopes from the Institute and Museum of the History of Science in Florence, Italy.
The base is leaded to add weight and made of brass for resistance to corrosion. A square sectioned pillar is attached to the base with a threaded boss and has rackwork for an articulated arm that supports the sleeve for the body tube. The arm has two swivel joints for positioning of the microscope in either a vertical or horizontal manner. A single eye lens is mounted at the end of the inner tube, which is translated for focusing with a rack and pinion gearset. The single objective is also mounted in brass and is inserted into the tube nosepiece.
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