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Compound Microscope in Case with Accessories, by Dollond, London, c. 1825-1850

preview image for Compound Microscope in Case with Accessories, by Dollond, London, c. 1825-1850
Inventory Number: 56603
Object Type: Object
Persons: Dollond
Date Created: 1825-1850
Place Created: London England United Kingdom Europe
Subject Classification(s): Microscopy  
Accession Number: 1970-101/part
Brief Description: The pillar is supported on a flat, folding tripod base with ball feet. A bracket holding the cylindrical limb is attached to the pillar by a compass joint. A rack and pinion raises and lowers the circular stage for coarse focusing. The stage is mechanical and the plate is moved by two milled screws. There is a pinhole and a peg to hold accessories. A sliding sleeve carries a condensing lens below the stage and a plano-concave mirror in a horseshoe mount is set at the lower end of the limb. The body tube screws into a threaded ring on an arm near the top of the limb. A mill-edged screw on the top of the limb moves the arm for fine focusing. A Huygenian eyepiece pushes into the top of the limb and a threaded collar screws into the lower end. Two button objective lenses that are held together with a bayonet fitting screw onto the collar. The fitted mahogany case also holds a copper alloy can for the containing an objective, a can with a small Lieberk├╝hn, stage forceps, a bull's-eye lens on two articulated arms, a cylinder with two lenses small magnifier, two live boxes, a glass phial, a black and white disc, two three glass discs, two glass discs with copper alloy rims, a copper alloy mount to hold the discs or phial on the stage, a cone condenser, two ivory talc boxes, a stage, an oval key for adjusting the angle of the microscope, fishplate comprised of a wooden board and a glass plate and six ivory sliders.
Primary Inscriptions: "Dollond London" on base
Provenance: Presented to the RMS by Charles Lees Curties FRMS on the 16th of November 1946
Collection Group: Royal Microscopical Society Collection
Material(s): Brass
Wood
Ivory
Dimensions:
Height Width Depth Diameter Unit
455 255 mm

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Image with multimedia irn 45267Image with multimedia irn 45268

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