| 摘要 |
PURPOSE: An eraser board marker is provided to combine an eraser with a board marker so as to reduce the time to write and erase. CONSTITUTION: An eraser board marker comprises an eraser which is combined with a board marker, a metal connector(B) for connecting the board marker and the eraser, and a switch(C) moving the eraser to forward or backward direction. The erase is attachable and detachable using the metal connector. A user pushes the eraser to use the eraser, and pulls the eraser when the user does not use the eraser. |
