| 摘要 |
A rotatory jig comprises a plummet, mounted on a lead, which on one side is hingedly connected with a wire core, on which the following parts are arranged along the strike: a rotatory petal of a concave shape, with an opening in main part thereof, an element, ensuring rotating the petal, made as one or several balls with an open end hole, and a hook. The plummet is made as a ball with a baffle as a whole and rigidly mounted on the lead. In doing so, at one end of the lead a clamp is made, and the second end has a ear to which the wire core is fixed. |
