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发明公开
CN101856936A 有标尺的画板 无效 - 撤回

有标尺的画板
摘要：
本发明是标尺设计在画板的左、下量垂直边上，标尺数字上应有透明保护层，标尺只能低于画板平面和边缘相平，这样既方便又耐用。
摘要（英）：

The invention relates to a drawing board with scaleplates. The scaleplates are designed on a left vertical edge and a lower vertical edge; a transparent protective layer is arranged on scaleplate figures; and the scaleplates are only lower than a plane of the drawing board and is flush with the edges, so that the drawing board with the scaleplates is convenient and durable.

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