Bridge, Wheatstone

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Ingenium, 1988.0395.001
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OBJECT TYPE: OPEN DIAL SWITCH
DATE: 1935–1950
ARTIFACT NUMBER: 1988.0395.001

MANUFACTURER: Leeds & Northrup Co.
MODEL: 4725
LOCATION: Philadelphia, Pennsylvania, United States of America

More Information

General Information

Serial #: 618338
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: METAL CABINET WITH WOODEN BASE & LID/ SYNTHETIC TOP PANEL & KNOBS/ BRASS LEVERS & OTHER WORKING PARTS

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 37.0 cm
Width: 26.0 cm
Height: 16.0 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Energy-electric
Category: Measurement
Sub-Category: N/A

Manufacturer

AKA: Leeds Northrup
Country: United States of America
State/Province: Pennsylvania
City: Philadelphia

Context

Country: Canada
State/Province: Ontario
Period: POSSIBLY 1930'S TO1950'S
Canada: USED IN SCIENTIFIC RESEARCH IN CANADA
Function: TO MEASURE ELECTRICAL RESISTANCE BY DIRECT COMPARISON WITH A STANDARD RESISTANCE & IS DESIGNED FOR MEASUREMENTS OF COMPARATIVELY HIGH ACCURACY.
Technical: TYPE SAMPLE/ THE WHEATSTONE BRIDGE CIRCUIT WAS THE MOST ACCURATE WAY TO MEASURE ELECTRICAL RESISTANCES
Area Notes: Unknown

Details

Markings: ON TOP PANEL: 'LEEDS & NORTHRUP CO./ PHILADELPHIA/ 618338/ MADE IN U.S.A.'/ TOPS OF KNOBS: '.1' '1' '10' '100' '1000'/ MARKED INSIDE LID: 'R805'/ DECAL: 'NATIONAL RESEARCH COUNCIL/ RADIO AND E.E. DIV./ INSTRUMENT NO./ R 805'/OTHER NUMBERED MARKINGS AROUND BRASS POSTS
Missing: N/A
Finish: WOOD STAINED & VARNISHED/ BLACKCABINET, TOP PANEL & KNOBS/ WHITE PRINTING
Decoration: N/A

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If you choose to share our information about this collection object, please cite:

Leeds & Northrup Co., Bridge, Wheatstone, circa 1935–1950, Artifact no. 1988.0395, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1988.0395.001/

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