Compound Microscope, by Andrew Pritchard, London, c. 1835 | |||||||||||
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| Inventory Number: | 53541 | ||||||||||
| Object Type: | Object | ||||||||||
| Persons: | Andrew Pritchard | ||||||||||
| Date Created: | |||||||||||
| Place Created: | London England United Kingdom Europe |
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| Subject Classification(s): | Microscopy | ||||||||||
| Brief Description: | This copper alloy instrument stands on a cylindrical pillar on a flat tripod foot. An inner pillar telescopes upward and is held in place by a tightening collar. The cylindrical limb is carried on a compass joint. A rack and pinion extends a bar, with a triangular cross section, from within the limb that carries the body tube on an arm. The eyepiece pushes into the top of the body and a spring-mounted nose has an internal thread to take an objective. None are present. A screw collar around the lower end of the body can extend and retract the nose for fine focusing. The mechanical stage has a rectangular stage plate with a bracket on two pegs to hold slides. A circular spring stage attaches to the stage hole by a bayonet fitting. A sliding sleeve carries the concave mirror in a horseshoe mount on the lower end of the limb. A plaster disk is on the reverse of the mirror. | ||||||||||
| Primary Inscriptions: | "Andrew Pritchard Fleet Street London no 122" on the base | ||||||||||
| Provenance: | Purchased from Dr. Reginald S. Clay with his collection | ||||||||||
| Collection Group: | Clay Collection | ||||||||||
| Material(s): |
copper alloy Glass metal | ||||||||||
| Dimensions: |
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Narratives | |||||||||||
Permalink: http://www.mhs.ox.ac.uk/object/inv/53541