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. (1917)
Kolesch & Company · Kolesch & Company · leaf 91
Pig. L Pig. II Above cuts illustrate the latest improved SEL FAD JUSTING construc-tion of the Precision Slide Rule, 1 he unshaded parts denote the stripsof white celluloid, the ends of which are fastened to the wood by GermanSilver screws, insuring absolute adherence to the body of the rule. The…
Drawing instruments · Surveying -- Instruments
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