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Single and Compound Microscope, by Hugh Powell, London, c. 1835

Inventory Number 38048

Acknowledgement: © History of Science Museum, University of Oxford, inv.38048

Subject
Microscopy
Item type
Object
Provenance
Purchased from Dr. Reginald S. Clay with his collection.
Primary inscriptions
"H. POWELL 24 Clarendon Strt, Somers Town, London"
Other inscriptions
Display label: "This microscope is signed 'H. POWELL 24 CLARENDON STRT, SOMERS TOWN, LONDON'. Powell was registered at that address between 1832 and 1841 before his partnership with Lealand".
Physical material
copper alloy
Glass
Dimensions
Height: 520mm Width: 210mm Depth: 210mm Weight: 2700g
Inventory No
38048
Accession Number
1944-1/59

Description

A cylindrical pillar rises from a flat tripod base with cork feet. An inner pillar telescopes vertically and is held in place by a tightening collar, set on the outer pillar. The cylindrical limb is mounted on a compass joint. A plano-concave mirror is held by a sliding sleeve at the lower end and the mechanical, spring stage is attached by a bracket at the top. A rack and pinion extends a bar, with a triangular cross section, from within the limb. The arm at the top of the bar has two collars to take a simple lens as well as the compound body that is fitted.

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