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近些年来,随着国民经济的发展,我国高大而复杂的建筑物和构筑物逐年增多,施工场地也日趋狭窄。普通经纬仪的望远镜绕横轴旋转时,由于受基座影响,最大仰角45°,俯角55°,如果在地面上观测建筑物的垂直度,仪器的架设距离须和建筑物高度相等,这对车辆往返频繁,施工场地狭小的大中城市来说,进行高、多层建筑物的垂直测量是不适应的。我公司经过多年研究试验,并在有关单位协助下制作成功了我国第二台
In recent years, with the development of the national economy, China’s tall and complex buildings and structures have increased year by year, and construction sites have become increasingly narrow. When the telescope of an ordinary theodolite rotates around the horizontal axis, the maximum elevation angle is 45° and the depression angle is 55° due to the influence of the base. If the verticality of the building is observed on the ground, the erection distance of the instrument must be equal to the height of the building. For large and medium-sized cities with frequent round-trips and narrow construction sites, vertical measurement of high-rise and multi-storey buildings is not suitable. After many years of research and experimentation, our company successfully produced the second China