Just as in-car satnavs have made life easier on the roads, in-tractor equivalents have revolutionised fertiliser spreading, spraying, cultivation and drilling accuracy. We take a looks at what is on offer for less than £2,000. See also: How to avoid the pitfalls when buying used GPS kit Tractor GPS This simple suction-mount device has a 5in LCD screen with zoom. Guidance graphics are supplemented by directional arrows and vocal left/right instructions. Parallel or contour guidance can be selected, with working speed displayed […]