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日本尼康(Nikon)公司1983年研制成功DTM-1型全自动电子测量仪和DR-1型数字记录仪。DTM-1型是一种全站型的测量仪器,它可以自动测量测点的斜距离、垂直角和水平角,并自动计算测点的水平距离、垂直距离、X、Y、Z坐标,以及气温、气压和棱镜常数的修正,还可进行单次距离测量、平均距离测量和跟踪距离测量的计算。所测量和计算的数据可自动显示在数字显示器上,也可存贮记录在DR-1型数字记录仪上。
Japan’s Nikon (Nikon) company in 1983 developed a fully automatic DTM-1 electronic measuring instrument and DR-1 digital recorder. The DTM-1 is a full-range measuring instrument that automatically measures the inclination, vertical and horizontal angles of a measurement point and automatically calculates the horizontal, vertical, X, Y, Z coordinates of the measurement point, and Temperature, pressure and prism constant correction, but also for a single distance measurement, the average distance measurement and tracking distance measurement calculation. Measured and calculated data can be automatically displayed on the digital display, can also be recorded on the DR-1 digital recorder.