| 摘要 |
Device for counting the points and the phases of the game of tennis. It consists of a bracelet (Fig. 1) perforated with eight holes, of three plates ensuring rigidity (Fig. 3), of eight movable discs actuated with the fingernail (Fig. 2) and of a flexible cover plate revealing the desired figure via notches, all this being fastened by means of rivets which may be made from tubular brass or from plastic material. <IMAGE>
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