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Compound Microscope, Case and Accessories, c. 1853

preview image for Compound Microscope, Case and Accessories,  c. 1853
Inventory Number: 53440
Object Type: Object
Subject Classification(s): Microscopy  
Brief Description: This copper alloy instrument is carried on trunnions on a flat tripod foot. The curved limb supports a sleeve holding the body tube. The body can be racked up and down within the sleeve, for coarse focusing, by two mill-edged knobs at the rear of the limb. The eyepiece screws into the top of the body. A vertical screw on the front of the lower end of the body moves an inner cylinder, with an internal thread to take objectives, for fine focusing. The rectangular stage has a sliding bracket to support specimens. A rotating disk with four apertures is mounted on the underside of the stage. A cylinder extends below the stage and as inner cylinder, with a pinhole to take a mirror pushes into it. The wooden case also holds an eyepiece, two Nicol prisms polarizers and two objectives that do not fit this instrument.
Primary Inscriptions: "Horne Thornthwaite & Wood Newgate St. London." on the foot
Provenance: Not ascertained. Pre 1950. Plaque on foot reads "A TOKEN OF grateful remembrance from the Members of the Plymouth Mechanics Institute to the REV. W.I. ODGERS 1853".
Collection Group:
Material(s): Copper alloy
Glass
Wood
Baize
Metal

There are no associated narratives.

Image with multimedia irn 45166

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