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Record Details

Compound Microscope, by Andrew Pritchard, London, c. 1835

preview image for Compound Microscope, by Andrew Pritchard, London, c. 1835
Inventory Number: 42721
Object Type: Object
Persons: Andrew Pritchard
Date Created: c 1835
Place Created: 263 Strand London England United Kingdom Europe
Subject Classification(s): Microscopy  
Brief Description: The copper alloy instrument stands on a flat tripod base. Two of the legs are shaped to fit into the case. The cylindrical pillar holds an internal pillar that telescopes upward and is held in place be a tightening collar on the outer pillar. A sliding sleeve on the pillar holds a post for accessories on an articulated arm. A compass joint carries the cylindrical limb in a sleeve with a tightening screw. A sliding sleeve on the lower part of the limb holds the plano-concave mirror. The rectangular stage is mounted on a bracket at the top of the limb. It has three pinholes, one on a pivoting arm, and spring clips. A ring with an internal thread set on two springs beneath the stage. A rack and pinion, operated by a triple mill-edged knob, extends a triangular bar. An arm is screwed to the top of the bar and the body tube screws into a ring on the arm. A ring clamp with a tightening screw is fixed to the top of the body. It is attached, by a pivoting joint, to two telescopic struts. Pegs at the lower end of the struts fit holes in the base. Accompanied by an interpretation label from when the object was on display.
Primary Inscriptions: "Andrew Pritchard 263 Strand London" on the base and the body
Provenance: Purchased from Dr. Reginald S. Clay with his collection
Collection Group: Clay Collection
Material(s): Copper alloy
Glass
Dimensions:
Height Width Depth Diameter Unit
468 221 180 mm

Narratives

Image with multimedia irn 44870

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