demonstration galvanometer
Datecirca 1940
Inventory Number1997-1-0369
ClassificationGalvanometer
Subject
Maker
The W. M. Welch Scientific Company
1880 - 1968
Cultural Region
Place of Origin
Dimensions35.5 × 40 × 17.2 cm (14 × 15 3/4 × 6 3/4 in.)
Material
DescriptionLarge demonstration galvanometer in cast aluminum black case with viewing window for paper scale graduated from 5-0-5. Base of galvanometer has eight binding posts. Five multipliers and four shunts labeled "VOLTS," "V.G.," "G.A.," and "AMPS." There is a resistor labeled "25 M.V." attached to two terminals on the lefthand side of the base. Two extra resistors in a plastic bag are attached to the righthand side of the base.
Signedin raised letters on base: WELCH
Inscribedbelow scale: CAT. NO. 2692.
(serial number): 27803
marked in chalk on top of case: Pointer broken
on back of case: painted red triangle
FunctionThis galvanometer was used in classroom demonstrations.
ProvenanceFrom the Science Center, Harvard University, 5/31/1978.
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Radio Corporation of America
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Western Electric Company
Date: 1900-1930
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General Electric Company
Date: circa 1915
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Object number: 0564c
General Electric Company
Date: circa 1915
Accessories: part of a group of four, 0564a-d
Object number: 0564d
General Electric Company
Date: circa 1915
Accessories: part of a group of four, 0564a-d
Object number: 0564a