论文部分内容阅读
为了避免因拥水影响水尺观读不准的缺点,我们制了个防水拥刀片水尺。其装置目的是使水尺板离开水尺椿,即将水尺椿的上下两头,安两根半公尺长的横棍,在两棍伸出去的顶端,各钻一个眼,将水尺板的一边刮成刀片形,在两头靠刀刃的一边安两根铁轴,插于横棍的铁眼内。这种水尺的优点是因为水尺板的轴偏在刀刃一端,故刀刃经常向着水流方向,水可以从水尺两边很快流通,减少阻力,没有拥水现象,
In order to avoid the shortcomings of water meter reading due to water, we made a water-proof knife blade. The purpose of the device is to leave the water board away from the water feet, namely the upper and lower ends of the water chime, two horizontal bars half a meter long, and the top of two sticks, each drilling an eye, While scraping into a blade-shaped, in the two ends of the edged by the side of two iron shaft, inserted in the horizontal iron rod in the eye. The advantage of this water ruler is that the blade of the water ruler plate is offset to one end of the blade edge. Therefore, the blade edge often moves toward the water flow direction, and the water can circulate rapidly from both sides of the water ruler to reduce the resistance,