| 摘要 |
PROBLEM TO BE SOLVED: To provide an eraser which is protected from breakage and bending when a force is applied, and also can regenerate a new corner by breaking.SOLUTION: An eraser (1) has an eraser body (2) in a shape of a pillar with corners, a core (3) in a shape of a rod which is arranged in the eraser body (2) and formed of a material which is harder than that of the eraser body (2), and a case (4) which covers the eraser body (2) and holds it freely in longitudinal direction so as to be delivered. A housing (5) of the core is arranged in the eraser body (2) along the longitudinal direction and the core (3) is arranged in the housing (5) in a feely-drawable and insertable manner. |
