为了测定水流的垂线平均速度(河流和渠道等)以及测速地点的深度,我們提出積深流速仪这种仪器。大家知道,使用現有的仪器(流速仪)來测定水流的流量,需要輔助設备电鈴、电池和电綫等。应用新式仪器,就不需要这些了。積深流速仪把测量流量和整理资料的工作加快到2～3倍,并使得可以徑直在野外整理测到的資料。这种仅器的制造和操作都很簡便。它的全图如图1所 In order to determine the average vertical velocity of the water stream (rivers and channels, etc.) and the depth of the tachometer site, we propose a device for measuring the depth of flow. As we all know, the use of existing equipment (flow meter) to determine the flow of water, the need for auxiliary equipment bells, batteries and wires. With new instruments, you do not need these. The depth meter measures flow and organizes data up to 2 to 3 times, making it possible to straighten out the measured data straight out in the field. This kind of device is very simple to manufacture and operate. Its full map shown in Figure 1