Items

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  Wilson Screw Barrel Microscope

  The screw barrel microscope is made from brass and has an ivory handle which can be dissembled to fit into the original case. The microscope consists of a cylinder with an external screw thread. The microscope has a mounted objective lens with a condenser lens screwed into the other side to illuminate the specimen during observation. Coarse focusing is achieved by screwing the body tube along the screw thread which adjusts the distance between lenses. The microscope is also equipped with an extension attachment that is needed to mount the objectives when using the stage forceps. The instrument can be used as a simple or compound microscope, depending on how many objectives are used. The case has a red velvet interior that has compartments for the dissembled microscope and its accessories. The case is secured by two brass swing hooks; however, one is missing.
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  Compass Pocket Microscope with Magnifying Glass

  The miniature botanist microscope has the original lens intact. The objective lenses are set in a Lieberkuhn reflector which reflects light evenly onto the specimen. The simple microscope seems to have an ivory or bone handle. There is an attachment with an inclination joint which allows the stage forceps to be angled for observation. The specimen holder is not original to the instrument. The instrument comes with a magnifying glass with a matching ivory (or bone) handle. 
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  Waistcoat Pocket Stanhope Microscope

  The handle of the waistcoat microscope is made from either bone or ivory. Invented by the third Earl of Stanhope, Stanhope lenses were moderately powerful and used to inspect specimens as well as read small prints. This type of lens was used in "Stanhopes," small novelty objects that contained microphotographs inside to be viewed using the lens.
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  Simple Field Microscope

  This Georgian miniature brass field microscope has a turned ivory handle, specimen pin, and a pair of lenses that screws into the top. The lens arm and handle are hinged to the slotted bar so that the instrument can be folded and fitted into a small case. Popular during the nineteenth century, this microscope is similar to a model produced by W & S Jones, a successful British optician, and manufacturer of scientific instruments. The finish on the microscope is lacquered brass. The microscope has a fitted papier-mâché case that is painted black.