Voltmeter, Electronic
Inventory NumberWJ0582
ClassificationVoltmeter
Subject
Maker
Ballantine Laboratories, Inc.
1934-present
Dimensions28.3 x 14 x 14.4 cm (11 1/8 x 5 1/2 x 5 11/16 in.)
Signedstamped on plate on bottom: ELECTRICAL VOLTMETER / MODEL 300 SERIAL NO. 3833 / MADE BY / BALLANTINE LABORATORIES INC. / BOONTON, NEW JERSEY, U.S.A.
Inscribedon face of scale, bottom: MODEL 643 NO. 160682
stamped in white on top: OEMsr-658 PAL / 11009
stamped in red on top:110-120 VOLTS / 50-60 CYCLES
in red on bottom: 76-B-676 / Tr-Hu- 2/7/61
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
Allen B. Du Mont Laboratories, Inc
Date: 1950-1960
Accessories: laboratory notes (in CHSI library)
Object number: 1997-1-0489