"ステンレス製で真円度が高く、3分以上回るというコマ「SEIMITSU COMA」も製造する由紀精密は、足先をテフロン加工した銅タングステン合金製のコマで出場。右利きと左利きの回し手をそろえ、相手と回転方向をあわせる対策まで立てていたとのこと。"
— 全日本製造業コマ大戦、優勝は神奈川県の由紀精密 | スラッシュドット・ジャパン idle (via otsune)
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