| 摘要 |
It comprises a rod (1) threaded at both of its ends and whose lower end is fastened onto a support formed of two arches (3) with the aid of a nut (4). Another nut (2) is screwed onto the upper end of the rod in order to form a handle (grip). A telescopic arm (5) is mounted on the rod (1) with the aid of a knee joint (hinge joint) (8) while a slider (6) is mounted on the first segment of the arm (5) with the aid of a second knee joint (hinge joint) (7). The support is intended to be placed axially on the target bowl of the set of bowls, the slider (6) being used for comparing the distances of the thrown bowls close to the target bowl, while the end of the telescopic arm (5) is used for comparing the distances of thrown bowls which are distant from the target bowl. <IMAGE>
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