A Brical circular pin-wheel compound addition calculator,  English, circa 1910,
Lot 72
A Brical circular pin-wheel compound addition calculator, English, circa 1910,
Sold for £112 (US$ 188) inc. premium
Auction Details
Lot Details
Scientific Instruments
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
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