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发明名称
弧长仪
摘要
弧长仪是一种能象直尺度量直线那样直接读出任意圆弧的长度、并能进行圆弧的任意分割的量弧工具。它具有一个平面,其上还有圆心线、读数线、数字标记和刻度曲线。弧长仪可以被配制在三角尺、绘图仪和其它设备上,扩大其功能提高产品的使用效率。
申请公布号
CN85102750B
申请公布日期
1986.09.10
申请号
CN85102750
申请日期
1985.04.12
申请人
周仪
发明人
周仪
分类号
G01B3/04;B43L13/20
主分类号
G01B3/04
代理机构
代理人
主权项
1、一种测量圆弧长度的工具,具有一个平面,其特征在于该平面上还有:
地址
江苏省南京市西康路一号南京水文研究所
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