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StabiFocal Compound Microscope

This unusual microscope is signed StabiFocal Locquin Paris-France and is reviewed in Gerard Turner's book The Great Age of the Microscope. Although the design is unusual and clearly advanced for the period, the microscope was unpractical and did not succeed in the market.

The body of the microscope is cast iron that has been polished and painted with a very pale green enamel. The elliptical base contains a plane mirror positioned at a 45-degree angle to a port through which light is directed. Two pillars, one cylindrical and the other flatter and curved with a light port, support the microscope body containing the nosepiece (containing six objectives) and ocular. Fine focus is achieved through rotation of the cylindrical pillar. Between the body and the support pillars rests a flat plate containing the substage condenser and a rotatable stage. The angled eyepiece is part of a prism body design that is focused by rotating the cylinder attaching the eyepiece to the microscope body.


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