Our wire sorters category consists of cable height meters and cable identifiers. A cable height meter uses ultrasonics to determine the height of a cable or wire. It enables verification of clearance under power lines, telecommunications lines, street lights, and so on. It can also tell you the distance between parallel lines. These items typically consist of a LED readout and a few controls to set proximity, preferences and volume. Cable identifiers are transmitters/receivers that enable a remote person to uniquely identify up to 16 wires. Both items are handheld and battery operated. For more fun with electronics, see our clamp meters and instrument combination kits.