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The idea of a mechanical or automatic production of images goes back centuries. On the one hand, we can see how improved drawing instruments - compasses, rulers, pens, pencils. There were new instruments, such as pantographs, through which images can be redrawn in a modified scale, trammel for drawing ellipses and arcs, drawing devices such as "drafting table", and various stencils, etc. In cartography, where a very high precision deposition details and measurements and came to a mechanical plotter - drawing table equipped with a guide with tools and toothed racks or helical gears with handles and dials with which to accurately set tool. This plotter can be considered the prototype of the modern mechanical drawing machine. Sometimes these machines are called plotting table. |