voltmeter (D.C.)
Datecirca 1905
Inventory Number0527
ClassificationVoltmeter
Subject
Maker
Weston Electrical Instrument Corporation
founded 1888
Cultural Region
Place of Origin
Place of Use
Dimensions11.5 × 19.9 × 20.7 cm (4 1/2 × 7 13/16 × 8 1/8 in.)
Material
DescriptionA metal-faced voltmeter housed in a square oak box with half-flap hinged cover. Top of cover has metal brackets for a leather handle; but handle is missing. Inside the case, the top of the instrument face has three bakelite binding posts, labeled "150," "15"and "+." Case houses a permanent magnet type movement.The face of the instrument is textured metal, and has a raised circular disk and a cutout fan-shaped display window. Through the window may be seen a scale, marked 0-150, above an arc-shaped mirrored strip, with an indicator needle. Below the scale is printed, "VOLTMETER MODEL 45 NO. 15446."
Signedplaque inside the cover of the wooden case: MADE BY THE / WESTON ELECTRICAL INSTRUMENT CO. / NEWARK, N.J. U.S.A. / PATENTED / NOV. 6, 1885 MAY 14, 1888, APRIL 30, 1880 / FEB. 17, 1891, DEC. 19, 1891 OCT. 4 1885 / JUL. 18, 1801 / MODEL (ILLEGIBLE) NO. (ILLEGIBLE).
printed on the side of the case: 527 / DC Volt / 15 150
Inscribedon side inside is a taped tag that reads: seal unbroken
FunctionVoltmeter, with two scale settings, either 15 or 150 volts.
ProvenanceFrom the Physics Department, Harvard University. Triangle indicates its use in the Physics 3 course in the 1920s.
Weston Electrical Instrument Corporation
Date: circa 1890
Object number: 1997-1-1061
Westinghouse Electric & Manufacturing Company
Date: 1952
Object number: 2003-1-0037
Weston Electrical Instrument Corporation
Date: late 19th Century
Accessories: 0269b (which is a multiplier for 0269a)
Object number: 0269a
General Electric Company
Date: late 19th-mid 20th Century
Accessories: multiplier ( 0271b)
Object number: 0271a
Weston Electrical Instrument Corporation
Date: circa 1925
Accessories: shunt (0531b); box of 6 screws, two modified bolts, and one small piece of wood (all these originally housed in petri dish, now transferred to archival box)
Object number: 0531a
Weston Electrical Instrument Corporation
Date: late 19th Century
Accessories: two shunts (#0270b and #0270c); special leads
Object number: 0270a
General Electric Company
Date: 1909-1930
Accessories: the inside of the lid contains two standardization certificates, one by A.S. Mancib (Somerville, MA), the other by Weston Electric (Newark).
Object number: 1997-1-1037
Weston Electrical Instrument Corporation
Date: 1911
Accessories: shunt (0438b)
Object number: 0438a
Jewell Electrical Instrument Company
Date: 1915-1929
Object number: 1997-1-0324