A.C. voltmeter
Date: 1930-1960
Inventory Number: WJ1279
Classification: Voltmeter
Subject:
Maker: Jewell Electrical Instrument Company (1899 - 1931)
Maker: (box) General Electric Company (1892-present)
User: Psycho-Acoustic Laboratory, Harvard University ? (1940 - 1962)
User: Department of Psychology, Harvard University (founded 1934)
Cultural Region:
Place of Origin:
City of Use:
Dimensions:
box - without lid: 7.5 × 8.5 × 8.5 cm (2 15/16 × 3 3/8 × 3 3/8 in.)
5.8 × 5.8 × 5.3 cm (2 1/4 × 2 1/4 × 2 1/16 in.)
Accessories: cardboard box (not original, GE)
Description:
Small, round Jewell Electrical Instrument Co., A.C. voltmeter, pattern no. 190, serial no. 886417. The instrument's dial is calibrated from 0 to 1.5 volts.
Cardboard box is not original (came from a GE voltmeter).
Cardboard box is not original (came from a GE voltmeter).
Signedon dial: PATTERN NO. 190/VOLTS/A.C./JEWELL/JEWELL ELECTRICAL INSTRUMENT CO./886417
Inscribedon box side: GENERAL ELECTRIC/MINIATURE INSTRUMENT/TYPE 8DW MODEL 46VAR5/RATING 150 Volts/REQ BPWR-19829/REMARKS CG# 22269/Anti-Glare Glass/SCHENECTADY, N.Y./MADE IN U.S.A.
on box top: Contract No. NXss-15910/1 Modulator Indicator/348/Navy Type No. -22269/G.E. Ref. P-7761557-P6/General Electric Co., Bridgeport, Conn.
on box top: Contract No. NXss-15910/1 Modulator Indicator/348/Navy Type No. -22269/G.E. Ref. P-7761557-P6/General Electric Co., Bridgeport, Conn.
Curatorial RemarksProbably used in the Psycho-Acoustic Laboratory. See inscriptions on instrument WJ1288.
ProvenanceFrom William James Hall, Harvard University.