| 摘要 |
An adjustable wrench includes a handle and a head extended from the handle. The head includes a fixed jaw, a movable jaw, and an adjusting screw. The movable jaw is rectilinearly movable relative to the fixed jaw upon rotation of the adjusting screw. A locking device is provided for locking the adjusting screw in place to thereby preventing rotation of the adjusting screw. A guide member is provided for guiding rectilinear movement of the movable jaw to thereby assure rectilinear movement of the movable jaw.
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