Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 128
Ratchet bit brace. RING DRILLS 91 … Eskimo skin scraper. AnnularDrills. From the beginning tool-makers have shown skill in fitting a tool to the hand, as in the Eskimo skin-scraper; this simple adaptation may have arrived in copying the effect of wear. Other good hints have come from observing an implement after its work is done. At…
Inventions · Inventors
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Kultur und Industrie südamerikanischer Völker : nach dem im Besitze des Museums für Völkerkunde zu Leipzig befindlichen Sammlungen : [volume 1] / von A. Stübel, W. Reiss und B. Koppel ; Text und Beschreibung der Tafeln von Max Uhle (1889)](https://img.insideoutlibrary.com/img/200/met-p16028coll4_12787-58-1.webp)
