external meter shunt
Datecirca 1900
Inventory Number0535
ClassificationShunt
Subject
Maker
Benjamin Osgood Peirce
?
1854 - 1914
Maker
Jefferson Physical Laboratory, Harvard University
founded 1884
Cultural Region
Place of Origin
Place of Use
Dimensions2.6 x 19 x 6.6 cm (1 x 7 1/2 x 2 5/8 in.)
Material
DescriptionPair of 1 inch strips of heavy copper with an additional piece bolted to each in the center at a gap in the 1" strips stata has fiber pieced stamped 10 AMP. Two cross strips also of copper hold the two pieces parallel- nuts and bolts.
Signedunsigned
Inscribedwritten in ink: B.o.P.;
written in pencil on block: 0,8;
written in pencil on block: 21112
Curatorial RemarksProbably made in the Jefferson Lab Shop by Prof. B.O. Peirce.
FunctionShuts that are used with meters divert most of the electricity so that it does not pass through the meter. This extends the range of the meter without damaging it.
ProvenanceFrom the Jefferson Physical Laboratory, Harvard University.
Weston Electrical Instrument Corporation
Date: circa 1912
Accessories: two cast metal connectors
Object number: 0533d
Spindler & Hoyer
Date: 1920
Accessories: Chart titled "Zweifaden-Elektrometer Nr. 378" [photocopy; original stored in the file for Inv. No. 1997-1-0131]
Object number: 1997-1-0132
American
Date: 1900-1950
Accessories: clamp; screws (4); wingnut (1); washers (6); nuts (3)
Object number: 1996-1-0266
American
Date: 1900-1950
Accessories: clamp; screws (4); wingnut (1); washers (6); nuts (3)
Object number: 1996-1-0267
General Electric Company
Date: circa 1915
Accessories: part of a group of four, 0564a-d
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
General Electric Company
Date: circa 1915
Accessories: part of a group of four, 0564a-d; the leather handle has separated from the device
Object number: 0564b