3M™ EMS Mini-Markers provide an accurate, convenient, long-lasting method of marking underground facilities at depths of up to six feet (1.8 m) from marker to locator.
Mini-markers are ideally suited for marking the location of utilities burried at depths of 6 feet (1.8 meters). Mini-markers provide positive and accurate idenfication of underground telephone lines, helping to reduce the risk of accidently excavating other buried facilites. Markers function without the need for an external power source. The marker spokes help stabilitze it in the correct position after placement