Appearing in Nachet catalogs between 1872 and 1892, this demonstration microscope was used to display specimens to a large audience. The microscope was photographed and described by Gerard Turner in his excellent volume Collecting Microscopes.

A wooden handle attached to a round bar serves as the base and limb for the microscope. The body tube is secured to the bar by means of a collar that positions the tube axially with the rectangular stage and condenser. A pair of brass legs, fasted to the end of the round bar with a screw, is used to support the microscope in an upright position when it is placed onto a table top. Focus is achieved by sliding the body forwards and backwards in the collar while examining the specimen.

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