How to use a McGregors soil moisture meter

McGregors Soil Moisture Meter Read more here How do they work? Moisture meters are simply a device that measures the amount of water in the soil. It provides an accurate way of checking water around the root zone of plants in the ground and in pots. It helps you work out if you are under or overwatering your plants. How do they work? They have no battery as the unit itself is a battery without a conductor (water). The long probe has two different metals that over which a weak current then can run when in contact with water. The...