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Bematists or bematistae (Ancient Greek ''βηματισταί'', from βῆμα ''bema'' 'pace'), were specialists in ancient Greece who were trained to measure distances by counting their steps. ==Measurements of Alexander's bematists== Bematists accompanied Alexander the Great on his campaign in Asia. Their measurements of the distances traveled by Alexander's army show a high degree of precision to the point that it had been suggested that they must have used an odometer, although there is no direct mentioning of such a device: The table below lists distances of the routes as measured by two of Alexander's bematists, Diognetus and Baeton. They were recorded in Pliny's Naturalis Historia (''NH'' 6.61–62). Another similar set of measurements is given by Strabo (11.8.9) following Eratosthenes.〔All data from: Engels 1978, p. 157〕 Notes: 1) 1 mille passus = 1,480 meters or 1,618.5 yards 2) 1 Attic stadion = 606’10’’ 3) The route is not recorded to have been followed by Alexander himself. Addenda: Leaving out the highest outlier each, the average deviation of the rest of the bematists's measurements would be 1.9% with Pliny and 1.5% with Strabo at a measured distance of 1,958 respectively 1,605 miles. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bematist」の詳細全文を読む スポンサード リンク
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