By Mike Anderson, Senior Editor | September 28, 2010

TrimbleAs creator of the patented dual Global Positioning Systems for machine control, Trimble offers a complete line of three-dimensional and conventional grade-control systems on the market. From laser or sonic-based through modernized GPS+GLONASS, these systems are easy to use, fully upgradeable, and flexible enough to meet a wide range of application and jobsite requirements. Trimble grade-control systems are designed to quickly pay for themselves in increased productivity and reduced overages.