Topcon mmGPS for Motorgraders

 Millimeter GPS+ transforms GPS into the perfect tool for blue-topping and other fine tolerance work.

With Millimeter GPS+, the days of lost productivity, using stringlines or running manually off of hubs, are over. Millimeter GPS+ combines the advantages of laser (multi-user & high vertical accuracy) with GPS (multi-user & 3D) into one versatile and easy to use system.

This patented technology improves grading accuracy up to 300% over existing 3D-GPS machine systems. Unlike any other laser technology, the PZL-1 transmitter sends out a wall of light 33' tall and up to 2000' in diameter. Simply add the PZS-MC machine control sensor or PZS-1 rover sensor to your existing GPS+ system, and watch your GPS vertical accuracy shrink down to numbers you never imagined before.

Need more coverage?

You can link up to four PZL-1 transmitters for a total of 8000' horizontally and 132' vertically. Unlike with total stations, multiple machines and man rovers run off one transmitter, there is no limit!

Request an email quote
or call 855-289-1772 for a quote.



  • World's first millimeter accurate GPS system, up to 300% more accurate than standard GPS
  • Laser Zone transmitter provides precise vertical measurement area 600m in diameter, 10m in height
  • Works with existing Topcon GPS+ systems
  • Multiple rover support machine or pole mounted
  • Lower investment - one system works for rough and finish grade
  • Grade to tighter tolerances and eliminate high cost material overruns
  • Finish grade 24/7 even with minimal satellite coverage