The Topcon System 5 Dozer allows you to choose from laser or sonic control, or even a combination of both. Whether working on flat pads, sloped pads, roads, or airports, earthmoving results are within a couple hundreths. The System 5 dozer is user-friendly with clear indicators, includes components with superior reliability, has smooth and consistent hydraulic response, 100% slope control sensor, mix and match sonic laser sensors and allows for individual blade control.