They said it couldn’t be done… but we did it! [July 24th, 2020 | Frederick, Colorado] 4Rivers Equipment and our 4Sight Solutions technology department are excited to announce the world’s first-ever John Deere 135G excavator with full grade control capability from Topcon Positioning Systems. This story begins with our great customer at Ultrasonic Guided Wave… Continue reading John Deere 135G Excavator & Full Grade Control