| 摘要 |
<p>A baseball line drawing device can be used drawing the lines constituting the baseball diamond line, and other lines such as those for positioning the bases. The baseball line drawing device comprises a first rope (1) of a length equal to the distance between the home base and the first base, a second rope (2) of a length equal to the distance between the home base and the third base, and a third rope (3) of a length equal to the shortest distance between the first and third bases, these three ropes being connected together in a triangular shape so that a baseball diamond line is formed by stretching the ropes into a right-angled triangle and a straight line. The ropes (1), (2), (3) are provided at essential portions thereof with members (4), (5), (6), (9) indicating the bases and a member (8) indicating the pitcher's plate. The employment of this baseball line drawing device means that a baseball diamond line can be readily and accurately drawn.</p> |
