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History of Science Museum

Two Hemispherical Illuminators, English, c. 1875-1900

Inventory Number 58565


Acknowledgement: © History of Science Museum, University of Oxford, inv.58565

Item type
Object
Provenance
Deposited by the Royal Microscopical Society with their collection.
Primary inscriptions
Unsigned and undated
Inventory No
58565
Accession Number
1970-101/part

Description

Two hemispherical illuminators, consisting of a glass hemisphere is set in a copper alloy ring that is mounted by an arm (a bracket on one and a straight bar on the other) onto a ball joint. The joint is at the top of a pillar on a sliding dovetailed section of the top of a cylinder. One illuminator has a lacquered finish, whilst the other illuminator has been left un lacquered. These illuminators can be used like an Amici prism to provide oblique light for a specimen.