| 摘要 |
The instrument comprises a telescopic shaft (1) one end containing a handle (2). At the other end a device (4), fixed by bolts or screws either in its axis (5) or orthogonally to it, is shaped in multiple circle sectors with a vertical axis. The inscribed circle (8) at the end of claws (7) has a radius less than that of the ball (9) to be moved so that when the sectors are placed on the ball a pressure on the shaft is sufficient to capture it
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