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发明名称
地图测距指南表
摘要
一种用于测量地图距离和指示南北方向的地图测距指南表,其刻度齿盘上刻有各种地图常用的比例尺。当测量地图距离时,可从刻度齿盘所转过的数值直接读出地图两点间的距离;当需辨别方向时,只要将指南针水平放置既可。本实用新型设计小巧,外形只有男式手表大小,并在上面装有钥匙链,便于携带。可做为旅游用品和旅游工艺品。
申请公布号
CN2157489Y
申请公布日期
1994.02.23
申请号
CN93211867.4
申请日期
1993.04.29
申请人
盖同曦
发明人
盖同曦
分类号
G01C17/04;G01B5/02
主分类号
G01C17/04
代理机构
代理人
主权项
1、一种直读式水准泡,包括气室、毛细玻璃管、气泡、玻璃管、填充液,其特征在于:玻璃管内壁根据被测角值对应的曲率半径经研磨或热成型后研磨,外壁刻有两条或一条零刻线及相应刻度,玻璃管的一端封闭,另一端与毛细玻璃管、气室烧接并互相连通,气泡和气室由填充液隔开,填充液为酒精和碳酸的混合液。
地址
116001辽宁省大连市中山区安阳街10号3-1
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