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underground cable marker

3M™ ScotchMark™ Electronic Marker System (EMS) Near Surface Marker

The 3M™ Near-Surface Marker provides an accurate, convenient, long-lasting method of marking underground and street-access facilities. Its size and shape allow for easy installation in asphalt, concrete or dirt, without extensive digging or drilling. The Near-Surface Marker is three inches long and 0.78 inches in diameter, and has a range of up to three feet (0.9 m) from marker to locator.