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Monkey wrench (English spelling)
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A type of wrench, named after the shape of its head, which resembles that of a monkey (see image). There are six nominal dimensions (mm) ranging from 100 to 375, each of which is 10 mm longer than the overall length. It is useful because the opening of the jaw can be adjusted, but a large wrench is often used to screw off bolts. Also, the lower jaw, which moves, is weaker, so it is always turned in the direction of the lower jaw. [Sasatani Shigeyasu] Source: Heibonsha World Encyclopedia, 2nd Edition Information |
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一種のスパナで，頭の形が猿に似ているのでこの名がある(図)。呼び寸法(mm)は100から375までの6種類があり，全長より10mm長い値になっている。口の開きが調節できるので重宝であるが，とかく大きいレンチを用いてボルトをねじ切ることが多い。また，動く側の下あごのほうが弱いので，必ず下あごの方向に回す。【笹谷 重康】
出典 株式会社平凡社世界大百科事典 第２版について 情報 |
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