| 摘要 |
PROBLEM TO BE SOLVED: To develop an eraser which can cleanly erase a chart drawn on a writing board by calipers or the like. SOLUTION: The eraser 1 is made of a nonwoven fabric using a pulp as a raw material. The eraser 1 is especially suitable for erasing the chart drawn on the writing board by the calipers 15, and a number of the erasers are stored in a storing case 2 by folding them. When a user pinches the eraser 1a projected from the storing case 2 and takes it out, a part of the next iraser 1b is projected from the storing case 2. When the chart is erased, the surface of the writing board 10 is wiped with the eraser 1. COPYRIGHT: (C)2007,JPO&INPIT
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