Voltmeter, electronic
Inventory NumberWJ0563
ClassificationVoltmeter
Subject
Maker
Ballantine Laboratories, Inc.
1934-present
Dimensions27.9 x 14.6 x 14 cm (11 x 5 3/4 x 5 1/2 in.)
Inscribedstamped on plate on front, top: P.A.L. SERIAL NO. 938
stamped on plate on bottom: ELECTRONIC VOLTMETER / MODEL 300 SERAIL NO 1706 / MADE BY / BALLANTINE LABORATORIES, INC. / BOONTON, NEW JERSEY, U.S.A.
stamped in white on bottom: NDRC / 658
stamped in white on bottom: 1244
Curatorial RemarksItem moved from WJH to 5th floor box in June, 1996. Dimensions unknown.
Ballantine Laboratories, Inc.
Date: 1947-1960
Accessories: one small plastic card: "Use the Ballantine voltmeter. . .".
Object number: 2006-1-0065
Ballantine Laboratories, Inc.
Date: copyright 1953
Accessories: "The Ballantine Rule," see 1998-1-1372a
Object number: 1998-1-1372b
Ballantine Laboratories, Inc.
Date: copyright 1953
Accessories: Instruction booklet, see 1998-1-1372b
Object number: 1998-1-1372a
Wang Laboratories, Inc.
Date: 1970
Accessories: cloth instrument cover lined with tissue paper; black power cord; accompanied by central electronic unit (2001-1-003b); two page hand-written note from Peter L. Smith, Research associate, Harvard College Observatory, regarding the donation of the calculator, dated 10 December, 2001 (original and copy in instrument file); photocopy of operation instructions from the bottom panel of calculator unit (in instrument file); printed document on the history of the Wang 360SE by Rick Bensene (in instrument file); printed document on the history of the Want 360SE from Geocity (in instrument file); printed document on the Orbiting Solar Observatories (in instrument file)
Object number: 2001-1-0033a
Wang Laboratories, Inc.
Date: circa 1970
Accessories: accompanies WANG 360SE calculator (2001-1-0033a);
two page hand-written note from Peter L. Smith, Research associate, Harvard College Observatory, regarding the donation of the calculator, dated 10 December, 2001 (original and copy in instrument file); photocopy of operation instructions from the bottom panel of calculator unit (in instrument file); printed document on the history of the Wang 360SE by Rick Bensene (in instrument file); printed document on the history of the Want 360SE from Geocity (in instrument file); printed document on the Orbiting Solar Observatories (in instrument file)
Object number: 2001-1-0033b
Cruft Laboratory, Harvard University
Accessories: Loose vacuum tube in side.
Object number: RS1134