| 摘要 |
A device for testing a wrench including a base fixed in a housing, a cylinder disposed in the base and having a piston rod extended upward, a support fixed on top of the piston rod for supporting the handle portion of the wrench, the socket of the wrench is retained in place and the handle portion of the wrench is pushed upward in a repeated action by the cylinder so as to test the working life of the wrench.
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