| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet to easily make a batter's box in a playing ground or a vacant land where there is no division line for an athletic use along a standard decided by a rule. SOLUTION: On the sheet shaped like the batter's box size, a position measurement part is placed, which is designed to decide an interval and a direction of the batter's box by adjusting to a contour of the home base. The position measurement part is formed by placing a notch part on the sheet.
|
