Labels:book | person | pole | reckoner | umbrella OCR: CIVIL ENGINEERING Although he is best remembered today as an artist, DRAWBRIDGE Leonardo made his living mainly as 3 civil engineer. His various patrons appointed him their chief engineer eonardo invented this retractable bridge for military use The drawbridge is lowered by hinge attached to one bank of the river system of coun terwei ights helps balance lowered the bridge as it CIVIL ENGINEERING have kind of extremely light and strong bridge, adapted to be most easily carried, and with ityou may pursue and at any time flee from, the enemy. 1996 SoftKey Multimedia Inc. subsidiary of SoftKey International Inc counterweights
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