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