Wire type live line measurement method and dedicated testing ruler

The invention relates to a wire type live line measurement method and a dedicated testing ruler, belonging to the technical field of power supply overhauling and maintenance. The technical scheme is as follows: the ruler comprises a body (4), slots (2), a permanent magnet (1) and an insulating tension pole connecting mechanism (3), wherein the body is a rectangular insulating plate; two sides of the rectangular insulating plate in the length direction are provided with a plurality of slots; the width of each slot is matched with the diameter of one type of wires; the end of the rectangular insulating plate in the width direction is provided with the permanent magnet; the other end in the width direction is provided with the insulating tension pole connecting mechanism. The ruler disclosed by the invention has the beneficial effects that the slots are processed according to the wire diameter strictly; the measured wires with steel-cored aluminum strands are arranged at one side while the ...