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普通水准仪都是利用水准管作为安平工具。为了精密安平,水准器的曲率半径是很大的,气泡十分灵敏,因此在水准测量时为了安平所化的时间,在全部作业中占有很大的比重。越是技术生疏,安平的时间越长;仪器越是精密,则所花费的时间也越多。这就是普通水平仪限制作业效率提高的主要矛盾。近年来自动安平水准仪发展甚快,我国也在积极研制。所谓自动安平或称自动补偿水准仪,就是允许水准仪的望远镜在一定程度内倾斜,一般为±10’,不需要把照准轴精确安平,却能测得与照准轴水平时相同的标尺读数。这样一来,除了能够节省安平时间外,
Ordinary level is the use of level control as Anping tools. In order to precision Anping, the radius of curvature of the spirit level is very big, the bubble is very sensitive, so in the level measurement for Anping’s time, occupies a large proportion in all operations. The more technical unfamiliar, Anping’s longer; the more sophisticated the instrument, the more time it takes. This is the main contradiction that the ordinary spirit level limits the efficiency of operation. In recent years, the rapid development of automatic Anping level, our country is also actively developed. The so-called automatic Anping or automatic compensation level, is to allow the level of the telescope telescope to a certain extent, usually ± 10 ’, do not need to accurately align the axis of peace, but can measure the level with the same level of sighting rod readings. As a result, in addition to saving Anping time,