Most 19th-century archaeologists assumed the ancient Egyptians only had crude hand tools. In 1880 Sir William Flinders Petrie realized that only lathe-turning could have produced the symmetry and balance he found on thousands of bowls and vases at Gizeh and Saqqara.
Technologists debate whether the craftsmen who made the perfectly balanced, round-bottomed bowls of polished granite, or long-necked vases of paper-thin schist, may have had much more sophisticated machinery than we have any record of.
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