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Old & rare 'Volvelle', navigation instrument, original, handmade and handcolored, 18th-19th century ( estimation )
Provenance unknown, from private collection, Netherlands
Upper part turns, 8,5 cm
Inner circle : IANVA - FEBRVAMART IVSAPRILISMAIVSIVNIVSIVLIVSAVGVSTVS SEPTEMBER - OCTOBER - NOVEM - DECEM
A volvelle or wheel chart is a type of slide chart, a paperconstruction with rotating parts. It is considered an early example of a paper analog computer.Volvelles have been produced to accommodate organization and calculation in many diverse subjects. Early examples of volvelles are found in the pages of astronomybooks.
in excellent condition
Price includes worldwide shipment, send from Holland
