Items

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  Aloe Herstein Microscope

  The compound microscope is made from brass and japanned cast iron. The tripod base is painted black and connected to the substage mirror via a pillar. The mirror is attached via a gimbal joint that allows it to rotate to catch the light for observation. The coarse focus functions by a rack and pinion mechanism which is controlled by thumbscrews on either side of the limb. Fine focusing is controlled by a small thumb screw at the back of the body tube. The square fixed stage has a slide manipulator which holds the specimen in place.
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  Bausch & Lomb Jug-Handled Microscope

  The compound microscope is made from brass and japanned brass. The microscope stands on a Y-shaped stand which is connected to the pillar. The pillar ends in an inclination joint which allows the microscope to be angled for observation. The fixed square stage has stage clips that hold the specimen in place; however, one clip is missing. The sub-stage mirror is held in a gimbal on an arm. The microscope has a signature "jug-handled" limb as it resembles a handle. The body-tube has an extension with measured markings, which via a sliding mechanism, can extend the length of the body-tube in order to focus. The coarse focusing functions via a rack and pinion mechanism which is controlled by a thumbscrew on the side of the body tube. Fine focus is controlled by the small thumbscrew on the top of the pillar. The instrument has the serial number "101809" etched into a black plaque on the base. The instrument has a triple nose piece which can be rotated and adjusted. The case is made from wood and has a brass carry handle. The case has a draw in the top left corner for the objectives and eye pieces.
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  American-Style A. S. Aloe & Co Microscope

  The American-style compound microscope is made from brass. The monocular microscope stands on a tripod stand which is connected to the pillar. The pillar is split into two by an inclination joint which allows the microscope to be angled for observation. The circular stage is fixed and has a rotatable iris diaphragm with apertures located beneath it. The sub-stage concave mirror is fitted into a gimbal which allows it to be angled to catch the light. Coarse focusing functions via rack and pinion controlled by two thumbscrews on either side of the body-tube. Fine focusing is controlled by a small thumbscrew located at the top of the pillar. The fitted wooden case has a small interior drawer and compartments to hold four ocular lenses. The case also has a lock and key that are still functional.
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  Ernst Leitz Dissecting Microscope

  The dissecting microscope is made polished brass and stands on a lead-weighted horseshoe foot. The instrument is signed "E. Leitz Wetzlar" on the foot. A rack and pinion mechanism controls the coarse focusing, and raises a triangular sectioned bar from within the pillar. The pivoting arm is attached to the top of the triangular bar and holds a split-ring mount for the lens. There is a blackened objective attachment with a mirror on a swinging arm that can be added to the lens mount. The stage plate is made from glass and brass. A substage plano-concave mirror is mounted on a swinging arm and gimbal attachment beneath the stage. The fitted mahogany case is padded with maroon velvet and is designed along a "chest" style. There is a brass ring handle located at the top of the case. There is a white plaque on the interior of the lid which reads "E.Leitz. Wetzlar. New-York 411.W.59.Str."
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  Bausch & Lomb Universal Microscope

  The universial microscope is made from brass and stands on a flat tripod foot. The limb is split into two by an inclination joint that allows the microscope to be angled for observation. The circular stage is missing its two stage clips which would hold the specimen in place. The monocular microscope has a substage aperture iris diaphragm which can be rotated to adjust the aperture. The arm of the mirror and condenser can be slotted into each other and are connected to a circular joint next to the stage which allows them both to be rotated. However, the microscope is missing its substage mirror and the two arms do not seem to slot into one another as they should. The coarse focusing functions via a rack and pinion mechanism which is controlled by the large thumbscrew on the side of the body tube. Fine focus is controlled by the small thumbscrew located on top of the limb. The microscope is signed "PAT. OCT. 3, 1876, PAT. OCT. 13, 1885" on the side of the pillar and "Bausch & Lomb Optical Co." on the stage. The mahogany case has a brass carry handle and is secured by a lock and key; however, the key is not present with the instrument. The case has an interior draw that holds the slides and accessories. The interior also has compartments for the objectives and ocular lenses, with the top compartment lined with blue velvet. 
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  Compound "Zentmayer" Style Microscope

  The compound microscope is made of lacquered brass and mounted on a japanned black cast iron horseshoe base. The main body tube is mounted on top of a four-inch brass pillar via a compass joint which allows the complete optical assembly to tilt over a range of 90 degrees. There is an inner sliding body tube extender which increases the body length by up to 3 inches. A removable substage condenser has an adjustable diaphragm opening (20 mm max.) The circular specimen stage is engraved "Betz Special, Chicago, Illinois" and has a substage diaphragm located underneath the stage. Many of the Betz microscope components were apparently manufactured by the Gundlach Manhattan Optical Company and some of the Betz microscopes were delivered with Zeiss lenses. The microscope comes with its original hardwood carrying case. It has an interior draw that holds the accessories. The case is secured by a brass swing hook on the side of the case and has a brass carry handle.
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  Bausch & Lomb Microscope

  The monocular compound microscope has a tripod base with the arm and stage in a cradle joint. The stage revolves, and has two indexed swinging arms below the stage. These arms are dovetailed for the substage condenser, which has a wheel of stops and a swing out holder for a dark field disk (which is present,) and for the concave mirror, which can swing below or above the stage. It has a single nosepiece and on the arm, below the focus knobs, are the patent dates for October 1876 and October 1885. "Bausch & Lomb Optical Co" is engraved on the revolving stage. The microscope has a single draw tube which is nickel plated. This microscope is very similar to number 170 in Billings Collection, noting that it has a single nosepiece and a single draw tube. The case is in serviceable condition, but shows the signs of extensive use. There are cracks on the back, the bottom has a crude repair on the front under the door. The lock is complete and seems to be functional, but the locking tab has been removed from the door and a swinging home made latch secures the door closed instead. The key is present in the drawer in the case. The top handle is missing and there is a picture of a dignified man on a Tennessee Walking Horse pasted on the back inside of the case.