If you have about half an acre of grass to mow, you could well be considering a small ride on lawnmower instead of a walk-behind petrol lawnmower. If you have more than an acre to mow, you might well be considering one of the larger machines, or a lawn tractor both of which will cope well with either formal lawns or rough grass. There are several things to consider when thinking about the purchase of a ride on lawnmower, it is quite an investment and you want to be sure you get it right. Here are the main categories...