SUNNYVALE, Calif., Jan. 9, 2004 -- Trimble (NASDAQ: TRMB) today introduced an advanced lightbar guidance system that combines the latest in graphic LCD display and Global Positioning System (GPS) technologies - the AgGPS® EZ-Guide® Plus. This system enables operators to manually steer equipment such as tractors, sprayers, fertilizer applicators, air seeders and large tillage tools with typical pass-to-pass accuracy of one foot or better. These advancements in lightbar technology provide vehicle operators with intuitive and accurate guidance in bright or low light, wind and dust, fog, rain or even snow.

"EZ-Guide Plus is a true breakthrough in lightbar guidance," said Alan Townsend, vice president and general manager of Trimble's Field Solutions Division. "It's the first affordable system to combine crystal-clear guidance LEDs and a sunlight-readable LCD screen -- all with the slimmest profile of any lightbar on the market."

"Because its controls are easy-to-use and its display simple to follow, the EZ-Guide Plus helps reduce driver fatigue and allows extended working hours when necessary during peak seasons," added Townsend. "This is truly an economical solution to enhance in-field productivity -- just eliminating 'guess rows' is a great productivity booster."

Trimble's EZ-Guide Plus can be installed in field equipment such as trucks, tractors or spray rigs in just a few minutes. Operator training takes just a few minutes more. Components include a 35-LED lightbar with integrated graphic LCD display and survey quality antenna.

The EZ-Guide Plus lightbar guidance system can be controlled with just three buttons. The lightbar screen walks the operator through a simple set-up procedure for each field, then displays a map showing current position, the path to follow and other guidance text information.

The system provides the operator with a variety of real-time information, including offline distance, swath number, speed and field area. It also outputs NMEA position data to other equipment such as yield monitors, planters and field computers.

The EZ-Guide Plus system provides the flexibility needed to be efficient in any terrain. It can be programmed for straight, curve, headland or center pivot guidance patterns. The graphic LCD screen displays intuitive turn and curve guidance, and it automatically advances to the next swath during turns for all patterns.

With a manufacturer's suggested list price of US$2,795, the EZ-Guide Plus system is fully upgradable to grow with the user's precision farming needs, including as-applied mapping, soil sampling, flow control, variable-rate management and other functions. The system can also be upgraded to Trimble's AgGPS Autopilot for automated steering on a wide variety of vehicles.

The system is expected to be available in February 2004. For more details, visit www.EZ-Guide.com to view an interactive demo of the EZ-Guide Plus system and to locate a dealer. For more information call 1-800-259-6501 or contact your local Trimble, Ag Leader, Case IH, New Holland or HARDI Inc. dealer.

About Trimble

Trimble is a leading innovator of Global Positioning System (GPS) technology. In addition to providing advanced GPS components, Trimble augments GPS with other positioning technologies as well as wireless communications and software to create complete customer solutions. Trimble's worldwide presence and unique capabilities position the Company for growth in emerging applications including surveying, automobile navigation, machine guidance, asset tracking, wireless platforms, and telecommunications infrastructure. Founded in 1978 and headquartered in Sunnyvale, Calif., Trimble has more than 2,000 employees in more than 20 countries worldwide.

Investor Relations Contact: Investor Relations of Trimble: (408) 481-6914
Media Contact: LeaAnn McNabb of Trimble: 408-481-7808