Accession Number: 2011.psy.10
Instrument Name: Milliammeter
A square wooden box with a scale on the front behind a glass window showing milliamperes (0-150). It has a leather brown strap on the right hand side. There are burgundy and black knobs on the top. A circular metal engraved label attached on the front reads: “CAUTION: Magnetic Fields may damage this meter. DO NOT PLACE IT ON OR NEAR A DYNAMO OR MOTOR”
Alternative Name: Milli-ampere meter
Primary Materials: Wood, Plastic, Leather
The instrument is a registered trade-marked ‘MEGGER,’ No 341951. Printed above the scale: “Made in England by Evershed and Vignoles Ltd.” Printed below the scale: “F.G. No. 341951″.
Dimensions (cm): Height = 5.5, Width = 15.5, Length = 11
An instrument for measuring small electric currents, calibrated in milliamperes.
Excellent. Slight rip and cracking of leather strap.
Associated Instruments: 2011.psy.32, 2011.psy.33
Manufacturer: Evershed & Vignoles Ltd., England
Date of Manufacture: Early 20th century
Dept. of Psychology, University of Toronto
Donated to UTSIC: No
Sydney Evershed and Ernerst Vignoles founded Evershed & Vignoles Ltd on February 5th 1895. They constructed the first portable insulation tester. The MEGaohm metER was then named a MEGGER, which became a trademark name in 1903.