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Electromagnetic Clock, by Venner Time Switches Ltd., London, c. 1930

Inventory Number 73981

Acknowledgement: © History of Science Museum, University of Oxford, inv.73981

Item type
Object
Makers
Venner
Provenance
Transferred from the Department of Experimental Psychology, University of Oxford, in 2000.
Primary inscriptions
"VENNER TIME SWITCHES LTD TYPE M.S. No 356 LONDON" on face
Physical material
Copper Alloy
Wood
Glass
Object type
Clock
Dimensions
Height: 75mm Width: 230mm Depth: 255mm
Inventory No
73981
Accession Number
2000-3/9

Description

An electromagnetic stopwatch in a copper alloy frame mounted on a slanted plywood stand. There is a small dial within the larger dial. The small one is marked "SECONDS" and is divided into 30ths marked "50 100 150 ... 250". The large one is divided into 100ths marked "0 1 ... 9". Around the side of the copper alloy frame is a dial marked "WIND", a button marked "RESET ZERO" and two progs marked "4 VOLTS" This instrument was used in reaction time experiments at the IEP c.1948.

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