The Sewer Line Rapid Assessment Tool, or SL-RAT, from InfoSense uses active acoustics to provide a quick view of blockage conditions within gravity-fed sewers. The test takes three minutes with no flow contact. It allows a crew of two to inspect 10,000 to 20,000 feet per day. It is Environmental Protection Agency-validated and GPS-enabled. Data can be downloaded to the Sewer Line Data OrGanizer, or SL-DOG, cloud application for visualization in Google Earth or integrated with enterprise/GIS applications. 704-644-1164; www.infosense.com .