| 摘要 |
PURPOSE: A pipe wrench is provided to prevent the change of clamping state by canceling the locked state of a switching dial. CONSTITUTION: A pipe wrench comprises an operating tool. The operating device comprises a switching dial(25), an operation changing unit, and a fixing member. The switching dial is installed to a through-hole(201) in order to vertically rotate. The through-hole is formed through a ring unit(21) side of a main body(20). The operation conversion member converts a vertical rotation of a switching dial into a horizontal rotation of a retainer. The fixing member selectively fixes the switching dial. |
