Original document(4 pages)  中文版
    This invention has overcome the unitarity and limitation of existing plane surveying and mapping tools which are used in all trades and professions for surveying and mapping the angles and yardsticks. It combines the yardstick needed for measuring lengths and the angle needed for measuring angles as a whole and is a kind of tool for surveying and mapping angles and yardsticks simultaneously.The instrument can survey and map angles and lengths simultaneously in any situation and be widely used in educational research, design measuring, plot-drawing, civil construction, geological exploring and processing of machine parts, etc..
Application Number
申请号		 85103394 Application Date
申请日		 1985.04.11
Title 名称 Surveying and cartography instrument combining two different functions
Publication Number
公开号		 1010848 Publication Date
公开日		 1987.05.06
Approval Pub. Date Granted Pub. Date
International Classification 分类号 G01B3/04
Applicant(s) Name
申请人		 Cao Yongsheng
Address 地址
Inventor(s) Name 发明人
Attorney & Agent 代理人
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