Panacea Products Moisture Meter The Panacea Products moisture meter measures the moisture content of soil, indicating when it is time to water your plants Three various zones are indicated on the top of the meter to indicate the level of moisture needed for various types of plants Panacea Products moisture meter is easy to use To use the meter, simply insert the probe into the soil and wait a few moments Measures 11-1/2 by 2 by 1-3/8 inches