Hydrometric lead fish weight: 8,15,30,50,75,100,150 (Kg) (can be customized) Uses: hydrological monitoring hydrological Cableway with lead fish, in accordance with national standards for lead in fish Hydrometric Product structure and classification, technical requirements, test methods, inspection rules, signs and instructions, packaging, transportation, storage and other requirements, manufacturing production. Lead is a metal or lead cast into the iron mixed with a certain weight and slim, streamlined shape than the hydrologic test equipment was. For rivers, lakes, channels cross section measured depth, velocity and sediment concentration such as the use of a variety of hydrologic test fish with lead. Lead fish as the main structure to streamline the fish in the fish's back with suspension mechanism and flow meter with vertical and horizontal tail hanging rods and other components and sources of lead fish whole.