This moisture meter is ideal for agricultural applications where you need to know if your crop is ready for baling and safe storage. Color-coded range at optimum moisture content shows at a glance if hay is safe to bale. Simplified controls are user friendly for entry-level use. Built-in calibration check ensures accurate readings. Color-coding the optimum range of 18 to 22% MC lets you know at a glance if you need to let the hay dry further or if it needs to be wetted before baling.