This moisture meter is a probe that is inserted to root level to provide instant readings of the moisture/pH level of soil. It has a large easy-to-read colour coded dial showing on a scale of 1-10: 1-3 Dry (red zone), 4-7 Moist (green zone) and 8-10 Wet (blue zone). It is simple to use and requires no battery.1 x Soil Moisture Reader/MeterLength: 260mm