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History of Science Museum

Lever Compressor, by A. Ross & Co., London, c. 1840

Inventory Number 82290


Acknowledgement: © History of Science Museum, University of Oxford, inv.82290

Item type
Object
Provenance
Deposited by the Royal Microscopical Society with their collection. Presented by PT Bowman Beale, 1907
Primary inscriptions
"Andw Ross & Co. Opticians 33 Regent St Piccadilly" on plate
Physical material
Copper alloy
Glass
Dimensions
Height: 29mm Width: 37mm Depth: 105mm Weight: 114g
Inventory No
82290
Accession Number
1970-101/part

Description

A heavy copper alloy plate has a thick circle of glass set in the centre. Mounted on the plate is an arm holding a circular mount for a glass disc above the disc on the plate. A knurled knob raises the arm at an angle, thereby pressing the top disc onto the bottom one.