LEICA Maxi Sonde 8/33

55mm (2.17") diameter dual frequency 8kHz or 33kHz sonde used to trace deep lying drains, sewers and other non conductive utilities. Maxi sonde has a M10 male thread with an additional female adapter and can be attached to a range of equipment including drain rods, boring tools and inspection cameras. Powered by 3 x AA alkaline batteries, with a depth range of 12 meters (39.4ft).