Weston's Direct-Reading Milli-Voltmeter
Inventory NumberWJ0374
ClassificationVoltmeter
Subject
Maker
Weston Electrical Instrument Corporation
founded 1888
Place of OriginNewark, N.J., United States
Dimensions10.8 x 19.7 x 17.1 cm (4 1/4 x 7 3/4 x 6 3/4 in.)
Signedstamped on arched brass plate on front: WESTON ELECTRICAL INSTRUMENT CO. / MODEL 1 NO. 20170 / NEWARK, N.J., U.S.A.
Inscribedstamped in white on back of voltmeter and top of case: HARVARD / PSYCHOLOGICAL LABORATORIES
writte in pencil on back of voltmeter: When used as ammeter / full scale 2.0 milliammeters (??)
stamped on outside of sliding panel: 705
written on pencil inside the slit for the panel: 103
Weston Electrical Instrument Corporation
Date: late 19th Century
Accessories: two shunts (#0270b and #0270c); special leads
Object number: 0270a
Weston Electrical Instrument Corporation
Date: 1890-1900
Object number: 0418
Weston Electrical Instrument Corporation
Date: 1890-1900
Accessories: shunt apparatus (0417b)
Object number: 0417a
Weston Electrical Instrument Corporation
Date: circa 1914
Accessories: multiplier in case of instrument; standardization certificate from the Weston Laboratory, Newark, N.J. Feb.1914 on lid of wooden case
Object number: 0278
Weston Electrical Instrument Corporation
Date: 1911
Accessories: shunt (0438b)
Object number: 0438a
Weston Electrical Instrument Corporation
Date: late 19th Century
Accessories: 0269b (which is a multiplier for 0269a)
Object number: 0269a
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: circa 1925
Accessories: is an accessory of standard voltmeter (0531a)
Object number: 0531b
Weston Electrical Instrument Corporation
Date: late 19th Century
Accessories: petri dish attached containing small parts and paper reading: "531; Weston no. 90"
Object number: 0270c
Weston Electrical Instrument Corporation
Date: late 19th Century
Accessories: goes with #0270a
Object number: 0270b
Weston Electrical Instrument Corporation
Date: 1900-1930
Object number: RS1056
Weston Electrical Instrument Corporation
Date: 1900-1930
Object number: RS1057