Images (3)

A.C. voltmeter, 0-10, US Navy type

Date: 1945-1960

Inventory Number: WJ1281

Classification: Voltmeter

Subject:

electricity, psychology,

Maker: General Electric Company (1892-present)

Associate Name: (contractor) United States Navy (founded 1775)

User: Psycho-Acoustic Laboratory, Harvard University ? (1940 - 1962)

User: Department of Psychology, Harvard University (founded 1934)

Cultural Region:

United States,

Place of Origin:

Bridgeport,

City of Use:

Cambridge,

Dimensions:

box: 7.6 × 8.6 × 8.6 cm (3 × 3 3/8 × 3 3/8 in.)

6.4 × 6.4 × 6.4 cm (2 1/2 × 2 1/2 × 2 1/2 in.)

Material:

glass, cardboard, plastic,

Accessories: cardboard box; small sealed envelope of hardware

Description:

Small, round General Electric A.C. voltmeter, U.S.N. (United States navy) type CG-22079, AW-41, model VCA24M. Uses matte-finish anti-glare glass.

Dial is calibrated from 0 to 10 volts.

Object box includes a small sealed envelope of hardware.

Signedon instrument dial: A-C VOLTS/GENERAL ELECTRIC/U.S.N. TYPE CG-22079/TYPE AW-41/MODEL VCA24M/U.S. PAT 1306624 1586683/1586884 1962929/MADE IN/U.S.A./10-7-4/N.P. 75889

Inscribedbarrel of meter is stamped: P7761557PT.9

label on side of box: GENERAL ELECTRIC/MINIATURE INSTRUMENT/TYPE 8AW MODEL 41[7]0A24M/RATING Volts A.C./REQ C 19831/REMARKS 22079/Anti-glare Glass/SCHENECTADY, N.Y.

label on top of box: Contract No. NX-ss15910/1 Voltmeter/665/Navy Type No. 22079/G.E. Ref. P-7761557-9/General Electric Co./Bridgeport, Conn./60

Curatorial RemarksThe GE Bridgeport plant was acquired by GE after World War II.

Probably used in the Psycho-Acoustic Laboratory. See inscriptions on instrument WJ1288.

ProvenanceFrom William James Hall, Harvard University.