Large Cylinder To Calculate Switzerland 1910 - Calculation - Mathematics

exceptional Swiss calculating machine signed "daemen - schmid" in zurich circa 1900 - 1910 This machine uses the principle of logarithmic calculus. It consists essentially of three parts: a cylinder of 470 mm in length bearing on its circumference many logarithmic double scales regularly distributed over the circumference; a slider that can be moved in the direction of the axis and circumference of the cylinder. plus a triface ruler that can be used in frontage, the instrument is covered with a protective wooden shell in a perfect state of preservation museum quality room! .... its dimensions: long: 59 cm width: 21,5 cm diameter of the cylinder: 16 cm free shipping by us in colissimo recommended with insurance