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大地测量仪器精度测试的野外方法水准仪ＤＩＮ１８７２３－９０第二部分（替代１９７５年的标准）１适用范围本标准与ＤＩＮ１８２７３第一部分用于野外条件下水准仪［１］的精度［２］测试。２概念水准仪是一种借助于水平视线测量高差［３］的大地测量仪器。在作高程测量...
Geodetic instruments precision test field method Level DIN18723-90 Part II (Alternative 1975 standards) 1 Scope This standard and the first part of DIN18273 for the field conditions Level [1] accuracy [2] test. 2 Concept Level is a type of geodetic instrument that measures height differences with the help of horizontal lines of sight [3]. Making elevation measurement ...