5 amp shunt
Datecirca 1912
Inventory Number0533b
ClassificationShunt
Subject
Maker
Weston Electrical Instrument Corporation
founded 1888
User
Department of Physics, Harvard University
founded 1884
User
Harvard Engineering School
1918 - 1951
Cultural Region
Place of Origin
Place of Use
Dimensionsshunt: 4.9 × 11.5 × 3.2 cm (1 15/16 × 4 1/2 × 1 1/4 in.)
blue board tray: 5.7 × 29.2 × 21 cm (2 1/4 × 11 1/2 × 8 1/4 in.)
blue board tray: 5.7 × 29.2 × 21 cm (2 1/4 × 11 1/2 × 8 1/4 in.)
Material
Description5 AMP Shunt Pat 1893 41/2 long a restistance strip held between two heavy brass binding posts on wood base. Screws for meter.
Signedunsigned
Inscribedcarved on wood: 5 AMP;
on metal: PAT MAY [ILLEGIBLE]
FunctionFrom Card: Except for 533b [this shunt], all these shunts are pivoted with bolts rather than wing bolts for current conductors, which would indicate these were used with switchboard meters.
ProvenanceFrom the Jefferson Physical Laboratory, Harvard University. Was used for teaching Physics 3 class; and from Pierce Hall, Engineering School, Harvard University.
Weston Electrical Instrument Corporation
Date: circa 1912
Accessories: two cast metal connectors
Object number: 0533d
Weston Electrical Instrument Corporation
Date: late 19th Century
Accessories: goes with #0270a
Object number: 0270b
Weston Electrical Instrument Corporation
Date: 1900-1917
Accessories: belongs with voltmeter (0526a); other accessories are another shunt (0526c) and the box (0526d)
Object number: 0526b
Weston Electrical Instrument Corporation
Date: 1900-1911
Accessories: milli-voltmeter (0438a)
Object number: 0438b
Weston Electrical Instrument Corporation
Date: late 19th-early 20th Century
Object number: 1997-1-1075
Weston Electrical Instrument Corporation
Date: dated 1888
Object number: 0417b
Weston Electrical Instrument Corporation
Date: late 19th Century
Accessories: petri dish attached containing small parts and paper reading: "531; Weston no. 90"
Object number: 0270c
Weston Electrical Instrument Corporation
Date: circa 1910
Object number: 1997-1-0331
Weston Electrical Instrument Corporation
Date: circa 1925
Accessories: is an accessory of standard voltmeter (0531a)
Object number: 0531b
