Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 268
es . . . The Bureau of Standards at Washington. . . Measurement in expert planning and reform. OUR grandfathers supposed that trade began in barter; wehave been able to go one step further back in history tofind that barter followed upon the custom of exchanging presents.This custom, among shrewd… … Ancient Egyptian balance.219 220 MEASUREMENT of Hunnafer, who lived in Egypt thirty-three centuries ago, wehave pictured a well-constructed balance of equal arms, in whicha feather is outweigfhir.s a human soul. In its successive im-
Inventions · Inventors
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![An illustration from Catalogue des monuments et inscriptions de l'Égypte antique / publié sous les auspices de S.A. Abbas II Helmi par la direction générale du Service des antiquités [de l'Égypte] ; par J. de Morgan, U. Bouriant, G. Legrain, G. Jéquier, A. Barsanti (1894)](https://img.insideoutlibrary.com/img/200/ia-cataloguedesmonu21egyp-294-562.webp)
