Infiltrometer's a device used to measure the rate of water infiltration into soil or other porous media. Commonly used infiltrometers are single ring or double ring infiltrometer. Others are the disc permeameter, and the sprinkler infiltrometer. The single ring involves driving a ring into the soil and supplying water in the ring either at constant head or falling head condition. Constant head refers to condition where the amount of water in the ring's always held constant. Because infiltration… (More on Infiltrometer)