Galvanometer

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Ingenium, 1987.0865.001
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OBJECT TYPE: LABORATORY/PORTABLE/MIRROR/DC/MOVING COIL
DATE: 1920–1946
ARTIFACT NUMBER: 1987.0865.001

MANUFACTURER: Leeds & Northrup Co.
MODEL: 2420A
LOCATION: Philadelphia, Pennsylvania, United States of America

More Information

General Information

Serial #: 657232
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: WOOD CASING WITH RUBBER FEET AND METAL FITTINGS/ BAKELITE STRIP WITH ELECTRICAL CONTACTS ATTACHED TO SIDE/ GLASS SCALE

Dimensions

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

Length: 22.0 cm
Width: 14.1 cm
Height: 13.5 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Meteorology
Category: Miscellaneous
Sub-Category: N/A

Manufacturer

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

Context

Country: Canada
State/Province: Unknown
Period: Unknown
Canada: EQUIPMENT USED BY CANADIAN METEOROLOGICAL SERVICE, PROBABLY IN CONSTRUCTION AND/OR MAINTENANCE OF INSTRUMENTS MANUFACTURED BY MSC.
Function: AN INSTRUMENT FOR DETECTING THE EXISTENCE & DETERMINING THE STRENGTH OF SMALL ELECTRICAL CURRENTS.
Technical: ANCESTORS OFMOVING COIL INSTRUMENTS WERE 'SIPHON RECORDER' DEV'D BY WILLIAM THOMSON (1867) FOR TELEGRAPH INDUSTRY & 'FISHBONE GALVANOMETER' INVENTED BY MARCEL DEPREZ (1880). JACQUES D'ARSONVAL SUGGESTED FIXING 'FISHBONE' IN DEPREZ'S INSTRUMENT & MAKING ITS COIL MOVEABLE... (SEE COMPLETE WS IN O:DRIVE SUPP.INFO.)
Area Notes: Unknown

Details

Markings: Plate on top reading 'LEEDS & NORTHRUP CO./ PHILADELPHIA PENNSYLVANIA/ MADE IN U.S.A./ CAT. NO. 2420A/ SERIAL NO. 657232'/ decal reading 'GOVERNMENT OF CANADA/ METEOROLOGICAL BRANCH/ INSTRUMENT DIVISION/ CALIBRATION UNIT/ C16-046A 657232/ DEPARTMENT OF TRANSPORT'
Missing: N/A
Finish: CASING STAINED BROWN & VARNISHED/ BLACK RUBBER/ BRASS FITTINGS/ BLACK BAKELITE/ COLOURLESS, TRANSLUCENT GLASS WITH WHITE MARKINGS
Decoration: N/A

CITE THIS OBJECT

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

Leeds & Northrup Co., Galvanometer, circa 1920–1946, Artifact no. 1987.0865, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1987.0865.001/

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