| 摘要 |
An adjustable wrench comprises a first handle piece, a second handle piece, an assembly block fastened between the first handle piece and the second handle piece, a rack, and a movable jaw. The first handle piece is provided with a fixed jaw. The block is provided at a longitudinal end with an assembly slot in which the rack is movably disposed such that the rack is urged by an urging rod in conjunction with a compression spring, and that a toothed portion of the rack is engaged, with a toothed portion of a slide block of the movable jaw, thereby enabling the movable jaw to be microadjusted.
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