The petrol rotary lawnmower is the machine that most of us recognise as a proper lawnmower. They are designed to cover a range of grass-cutting tasks rather than specialising in one particular area of lawn-care. The choice nowadays is vast but can loosely be broken down between 4-wheel rotary mowers, best suited to mixed garden styles with differing types of grass areas and rear-roller rotary mowers, capable of leaving a neat finish with a defined stripe on more formal areas such as lawns and front gardens.