Illustrated catalogue and price-list of drawing and tracing papers, sun print papers and equipments, drawing instruments and materials, surveying instruments, accessories, etc. / Kolesch & Company. (1907)
Kolesch & Company · Kolesch & Company · leaf 96
2894 2893 The Charpentier Circular Slide Rule, as shown in illustration above,was designed for vest pocket use. It consists of a German silver disc,2§ inches diameter, which forms the body of the rule. A brass ringserving as a slide is recessed in the German silver body and is operatedby the…
Drawing instruments · Surveying instruments
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