A Brical circular pin-wheel compound addition calculator,  English, circa 1910,
Lot 89
A Brical circular pin-wheel compound addition calculator, English, circa 1910,
£150 - 220
US$ 250 - 370
Lot Details
A Brical circular pin-wheel compound addition calculator, English, circa 1910,
No. 2004, with pin-notch arcs for input values, four window read-out below for two-column £, singular /- and d., title inscribed, in brass body, in original fitted black leatherette case - 5.1/4in. (13.5cm) diameter
Activities
Contacts
  1. Jon Baddeley
    Specialist - Scientific Instruments
    Bonhams
    Work
    Montpelier Street
    London, SW7 1HH
    United Kingdom
    Work 0207 393 3872
    FaxFax: +44 20 7393 3873
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