| 摘要 |
<p>The invention relates to a mechanical aid for use with betting systems. The aid comprises at least one elongate baseplate (1) having facilities, for example a grid, for recording thereon a selected forecast system, and a cursor (2) which is arranged for movement along the base-plate (1) and which has facilities for recording thereon selected results of events which are to be incorporated in the selected forecast system and from which a forecast compilation is made in accordance with the system.</p> |
