Gastraphetes, Copy M, Codex Parisinus inter supplementa Graeca 607 (fol. 47v).jpg
unknown illuminator
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Gastraphetes, Copy M, Codex Parisinus inter supplementa Graeca 607 (fol. 47v), Gastraphetes
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Gastraphetes, Copy M, Codex Parisinus inter supplementa Graeca 607 (fol. 47v), Gastraphetes of the Greek engineer Hero of Alexandria (manuscript illumination). 
*Explanation: The green horizontal line with its forwardly bent limbs represents the double recurve bow. Below in red runs the bow string, which is drawn on the stock (the vertical thick red line). It was cocked by pressing down the stomach in a concavity at the rear of the stock which is the curved structure (red) at the bottom., The design of the gastraphetes according to Heron of Alexandria (click for details)
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ガストラフェテス、コピーM、写本 パリinus inter supplementa Graeca 607(第47節)、ガストラフェテス
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ガストラフェテス、コピーM、写本 パリinus inter supplementa Graeca 607(第47節)、ギリシャのエンジニアアレクサンドリアのガストラフェテス(写本の照明)。* 拡張:前方に曲がった手足を持つ緑色の水平線は、ダブルリカーブボウを表す。赤地に赤の矢印が入る。胃袋は、ストックの裏側の凸で胃を押し下げて、下側の湾曲した構造(赤)。アレクサンドリアのヘロンによる胃袋の設計(詳細はClick)。
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bottom rot concavity recurved