alternating current voltmeter
Date1920-1930
Inventory Number0208
ClassificationVoltmeter
Subject
User
Department of Physics, Harvard University
founded 1884
Cultural Region
Place of Use
Dimensions12.8 × 10.5 × 5.7 cm (5 1/16 × 4 1/8 × 2 1/4 in.)
blue board box: 11.4 × 38.4 × 31.1 cm (4 1/2 × 15 1/8 × 12 1/4 in.)
blue board box: 11.4 × 38.4 × 31.1 cm (4 1/2 × 15 1/8 × 12 1/4 in.)
Material
DescriptionA voltmeter, consisting of a moving vane attached to a coil. The instrument is contained in a cylindrical brass case with a glass top. Same as #0209. Two metal binding posts protrude from the side of the instrument case.
On the instrument display, a printed scale goes from 0 - 30. Printed at the bottom of the display, "+ VOLT -"
On the instrument display, a printed scale goes from 0 - 30. Printed at the bottom of the display, "+ VOLT -"
Signedunsigned
Inscribedprinted scale on instrument display: 0 - 30; printed at the bottom of display: + VOLT -
Curatorial RemarksSame as #0209.
FunctionInstrument for measuring AC voltage.
ProvenanceFrom the Physics Department, Harvard University.
Historical AttributesPhysics Dept. Old nos. with blue triangle indicate use in Physics 3 in the late 1920's.
Westinghouse Electric & Manufacturing Company
Date: 1952
Object number: 2003-1-0037
Weston Electrical Instrument Corporation
Date: 1911
Accessories: shunt (0438b)
Object number: 0438a
Department of Physics, Harvard University
Date: circa 1910
Object number: 1997-1-1511
Department of Physics, Harvard University
Date: mid 20th-late 20th Century
Object number: 2004-1-0412a