Mechanical Flow Meters. This type of water flow meter is the most economical and common water flow meter type. It does flow measurement via a turbine rotation with a paddle wheel, propeller, or shunt ...

The mechanical types of water flow meters work by measuring the speed of water flowing through the pipe that causes a piston or turbine to rotate. The volumetric flow rate of the water is proportional ...

The museum's oldest meter is a Worthington duplex piston, serial number 55,542, that was probably made in the 1890s, and is a late example of America's first successful meter.