Images(4)

Voltmeter

Object number2007.167.553

Manufacturer Westinghouse Electric and Manufacturing Company (1886 - 1945)

Date1953-1960

Possible OriginNewark, NJ

MediumPlastic; Metal; Paper; Leather

Credit LineTransfer from George Westinghouse Museum Foundation

DescriptionBlack plastic voltmeter with silver metal, two paper documents, and a black leather handle. DimensionsHeight x Width x Depth (Closed): 4.25 x 8.75 x 8.125 in. (10.8 x 22.2 x 20.6 cm)
Height x Width x Depth (Open): 4 x 16.5 x 8.125 in. (10.2 x 41.9 x 20.6 cm)
MarksWhite text around the clasp states "W.E.Corp / SER.2012316 / SEC.F-7 / 25 / D.C. VOLTMETER / O-150-300V".

Black text on the meter states "STYLE 820178 / MADE IN U.S.A. / WESTINGHOUSE / SERIAL 2012316 / VOLTS / DIRECT CURRENT / TYPE PX5 / 200 OHMS/ VOLTS".

Black text on the white paper under the lid states "Westinghouse / PORTABLE VOLTMETER / TYPE PX-5 / STYLE NO. 820178 / SERIAL NO. 2012316 / RANGES 0-150-300 / VOLTS DIRECT CURRENT / (instructions and temperature) / Calibration Laboratory, per Robert White / Date 5-20-44 / Westinghouse Electric & Manufacturing Co. / Meter Div., Newark, N.J."

Black text on the calibration record states "CALIBRATION RECORD / Serial No. 2012316 25 / Portable d.c. Voltmeter / RESISTANCE / SCALE / OHMS / 300V-60000 / 150V-30000 / DROP OF SHUNT / M.V. / Temp. Coeff. / % PER [degrees] C / Calibrated at [degree] C / Standard / 150 / 120 / 90 / 60 / 30 / 0 / Reading / 150.5 / 120.3 / 90.3 / 60.2 / 30.2 / 0 / Scale Ratio OK / Dep't h(?)-7 / Date 5-10-62 / Calibrated by Bk CHI / Calibration Due 8-10-62".

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