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钢尺比长时,加10或15公斤拉力后,不稳定、易波动,这个问题,一直没有得到很好的解决。为了解决这个问题,我们自制了钢尺比长架和垂球。比长架直接安装在经纬仪三脚架上,在钢尺比长时挂垂球既方便,又稳定。垂球:它是由3个5公斤的铁铊,加工成有挂钩的垂球,可以挂15公斤,也可以挂10公斤,使用非常方便。如下图所示。钢尺比长架具体做法如下:
Steel ruler than long, plus 10 or 15 kg pull, unstable, easy to fluctuate, this problem has not been well resolved. In order to solve this problem, we made a self-made steel ruler than the long frame and vertical ball. Than the long-frame mounted directly on the tripod on theodolite, hanging than the long steel ball hanging ball is convenient and stable. Pillow: It is made of 3 5 kg of iron thallium, processed into a linked vertical ball, you can hang 15 kg, you can also hang 10 kg, the use of very convenient. As shown below. Concrete ruler than long frame as follows: