The Parsons trencher line, manufactured by Maxon Industries, includes six models, ranging in horsepower from 8 to 82 and in maximum digging depth from 30 to 108 inches. In the mix are three pedestrian and three ride-on models. The 700-pound T-130 shown here is the largest pedestrian model and uses either a 13-hp Honda or Briggs & Stratton engine. Digging widths range from 4 to 6 inches, and depths from 18 to 36 inches. It also has locking wheel hubs.