resistance box
Date1890-1910
Inventory Number0333
ClassificationResistance Box
Subject
Maker
Crompton & Company, Ltd.
1878 - 1927
User
Department of Physics, Harvard University
founded 1884
Cultural Region
Place of Origin
Place of Use
Dimensions11 × 45 × 32 cm (4 5/16 × 17 11/16 × 12 5/8 in.)
Material
DescriptionResistance box consisting of resistance wire strung between many pegs, which are brought out to nine external terminals. These terminals are marked with different resistances. The instrument is mounted in a rectangular wooden box with a hard rubber panel on the front, containing the terminals, the maker's information, and the voltage maximum.
There is a sliding wooden panel on the underside which allows access to the interior wire.
There is a sliding wooden panel on the underside which allows access to the interior wire.
Signedon bottom of case: CROMPTON & Co. CHELMSFORD
Inscribedon bottom of case: FOR 600 VOLTS MAXIMUM
resistances marked: 150 150 150 150 / 15 / 15
FunctionSuch an instrument is used to measure the resistance of electric conductors. For a short general description and other images, go to the following website.
ProvenanceFrom the Department of Physics, Harvard University.
Date: 1890-1930
Object number: RS0174
Date: 1890-1930
Object number: RS0528
Hartmann & Braun AG
Date: 1900-1920
Accessories: plugs (8)
Object number: 1997-1-0399
Leeds & Northrup Company
Date: early 20th Century
Object number: 1997-1-1221
Jefferson Physical Laboratory, Harvard University
Date: c. 1905
Object number: 0484