What is the difference between a wire finder and a wire meter? A simple explanation of how it works?

The cable finder uses the principle of high-frequency magnetic field to find the alignment of the concealed wires. Wiremeter is to detect the correct order of the cable with. The wire finder will oscillate the hairpiece on a section of the line, and then use the wire finder to track, in the vicinity of the line to be sought, the wire finder will be issued by the weng name sound, away from the line the closer the sound will be louder. The wire finder should be connected to the target line on the transmitter and receiver, and then check the cable one by one to see if it is smooth and the wire sequence is correct.