Formerly known as the Trident, the Aggrameter utilizes the latest microwave and microprocessor technology to measure moisture content in various fine and coarse-grained materials. The prongs of the probe are inserted into the material to be tested and the percentage of moisture content is instantaneously shown on the easy to read display. The Aggrameter comes calibrated for both sand and aggregate, and can be programmed by the user for up to ten different materials. The Aggrameter can store more than 150 readings – complete with time and date for future reference. The maximum aggregate particle size to be tested is approximately 3/8" (or 9.5mm) in diameter.