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Microscope with Accessories and Case by W.J. Salmon, London, c. 1850

preview image for Microscope with Accessories and Case by W.J. Salmon, London, c. 1850
Inventory Number: 49288
Object Type: Object
Persons: William John Salmon
Date Created: circa 1850
Place Created: London England United Kingdom Europe
Subject Classification(s): Microscopy  
Accession Number:
Brief Description: Copper alloy Microscope. The pillar of this copper alloy instrument consisting of a pillar which stands on a triangular base with three circular feet. The limb is carried on trunnions and when upright fits into a slot in the pillar. A rack and pinion set in the joint and operated by two knobs, raises a bar with a triangular section. The body tube screws onto an arm at the top of the bar and the eyepiece pushes into the top of the body. A vertical screw near the lower end of the body operates the fine focus. The rectangular stage has a pinhole for accessories. A knob beneath the stage racks a plate in a dovetail slot back and forth. A shelf, to hold specimens, slides in a dovetail slot in the plate. The plano-concave mirror is mounted on a pivoting arm on the limb, below the stage. There are accessories and a case with the microscope. The pillar and eyepiece must be detached to fit the microscope into its wooden case. A drawer in the top of the case holds stage forceps and a bull's-eye lens, both of which are on steel pins mounted on ball joints. There is also a biconvex lens with no setting. There is a key for the case.
Primary Inscriptions: "W.J. Salmon, 254 Whitechapel Road, London" on the arm Sticky label on door: "P.T.B. Beale"
Provenance: Lent by the Royal Microscopical Society. Presented to the Society by Peyton Todd Bowman Beale on the 20th of Feburary 1907.
Collection Group: Royal Microscopical Society Collection
Material(s): Copper alloy

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