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目前我们的水文站里,作普通测量用的仪器是配备得很齐备的。在不能架设过河断面索的二等以上的水文站上,一般都有经纬仪和水准仪各一架,有的站上还增加有一部水准仪。水准仪用作校对水尺零点,校测各校核水准点,施测大断面水上部份各断面点的高程以及负责校测所属水位站的水尺零点。经纬仪负责在测流或测断面时,施测各测点的水平夹角,从而推算出各测点的起点距。由於这些仪器的任务很固定,每月被使用的实际工时也就不
At present, our hydrological station, for general measurement equipment is equipped with very complete. In the second and above hydrological stations where cross-river cables can not be set up, there are generally one theodolites and water level gauges, and some have an additional water level gauge. The level is used to calibrate the zero point of the water scale, calibrate the checkpoints of each checkpoint, measure the elevation of each section point in the water section of the large section, and calibrate the water level zero of the water level station. Theodolite is responsible for measuring the measured angle or measuring surface, measuring the horizontal angle of each measuring point, so as to calculate the starting point of each measuring point. Since the tasks of these instruments are fixed, the actual working hours used per month are not