The Trimble ST400 Sonic Tracer uses ultra-sonic signals to maintain a set distance or elevation from an object, a design surface, or the ground. When mounted to a motor grader or dozer blade, the ST400 Tracer can be used to reference a string line, curb and gutter, or previous pass as a grade control reference.

Features and Benefits

• Multicolored integrated grade display provides clear grade feedback to the machine operator for higher productivity.
• Selectable sensor accuracy provides typical accuracy of +/- 1mm to control elevation for even the tightest jobsite specifications
• Can be used in single or dual configuration and is compatible with GCS900 Grade Control Systems