Accuracy: Submeter, decimeter, sub-1 in. (RTK)

Components: Hydraulic kit, X20 monitor, and electronic control unit. The submeter system also has a WAAS receiver. The decimeter system also has a Map HP GPS receiver. The RTK system also has a Map HP GPS receiver and Map HP GPS base station.

Compatibility: Kits are available for a range of tractors, sprayers and combines.

Price: Submeter, $13,000 to $16,000; decimeter, $16,000 to $19,000; RTK, $30,000+

Contact Topcon Positioning Systems at 925/245-8300,, or circle 109.