| 摘要 |
A wrench comprising a handle having a fixed flat anvil surface and a pair of arms movable within the handle, said arms projecting from said handle from opposite sides of the fixed flat anvil surface and movable at an acute angle of substantially 16° 6' with a centerline of the wrench. The arms have opposed gripping heads arranged so that their respective gripping surfaces form an abutting relationship with the entire one of the sides of the six-sided fastener when said arms are in said gripping positions. A means for moving said arms along said linear paths includes a helical thumbscrew disposed between the arms and configured to engage threaded portions of the arms. |
