Elliott Bros. electrical bridge

Description (Brief):

This bridge consists of an instrument with brass external components mounted in a wooden case with a hard rubber top; marked “Elliot Bros, London, No. 1652". It 'is a dial plug type bridge having five decades adjustable from 0.1 ohm to 10,000 ohms. The original resistors in this bridge were probably made of platenoid which is an alloy of tungsten, nickel, copper and zinc. Manganin, which is not affected by temperature, subsequently replaced platenoid and all other alloys for this purpose.

Date Made: ca 1887

Maker: Elliott Brothers

Location: Currently not on view

See more items in: Work and Industry: Electricity

Exhibition:

Exhibition Location:

Credit Line: from Weston Electrical Instrument Corp., thru John H. Miller

Data Source: National Museum of American History

Id Number: EM.313266Catalog Number: 313266Accession Number: 181342

Object Name: resistance bridgebridgebridge resistance

Measurements: overall: 7 3/4 in x 28 3/4 in x 9 3/4 in; 19.685 cm x 73.025 cm x 24.765 cm

Guid: http://n2t.net/ark:/65665/ng49ca746ab-abcc-704b-e053-15f76fa0b4fa

Record Id: nmah_1292579

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