According to field mapping experience of the author, the features of plummet are summarized, and the inspection methods and horse erection skills of the optical plummet are mainly introduced.
根据多年从事测绘外业实践经验，总结测量仪器对点器的特点，重点介绍光学对点器的检验方法及其脚架架设技巧。
According to field mapping experience of the author, the features of plummet are summarized, and the inspection methods and horse erection skills of the optical plummet are mainly introduced.
根据多年从事测绘外业实践经验，总结测量仪器对点器的特点，重点介绍光学对点器的检验方法及其脚架架设技巧。
应用推荐