 The cutting height on a lawn mower can be adjusted for the length of the lawn. A wide cutting range is useful if you have to cut more than one lawn of different qualities, or if the grass is at different heights at various times of the year. For rotary and electric lawn mowers, look for a wide cutting range from 12 to 70mm, and for petrol lawn mowers, look for a range from 25 to 80mm. This helps to keep both your back and the front lawn looking fantastic.