发明名称 STUDY DEVICE FOR MORE EASILY UNDERSTANDING A TRAVERSE SURVEY AND SUVEY STUDYING METHOD USING IT
摘要 PURPOSE: A learning material for measuring a traverse and a measurement learning method using the same are provided to visually enlighten a traverse measuring concept by displaying the azimuth, the bearing, the latitude, and the departure. CONSTITUTION: A disk(1) includes a center pole(4) and a receiving groove(2'). An angle displaying part(2) displays angles and bearings in the range of 0 to 360 degrees. A circular gradation indicator(5) includes a first through holes inserted into the center pole of the disk. A plurality of graduated rulers(3) forms a first through hole at one side. The first though hole of the graduated rulers is inserted into the center pole of the disk.
申请公布号 KR20110071154(A) 申请公布日期 2011.06.29
申请号 KR20090127627 申请日期 2009.12.21
申请人 YUN, EUN KUNG 发明人 YUN, KI CERL;YUN, SUK HEN;YUN, EUN KUNG
分类号 G09B25/06 主分类号 G09B25/06
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