Methods and appliances for measurement, standardisation, adjustment, cleaning, manufacture and polishing

摘要

The invention relates to a non-destructive method for measuring a ratio of cross-sections. It relates to a method for measuring a ratio of cross-sections between a part of a first material and a part of a second material of an electrical wire (27), which comprises prior storing of the electrical resistance values of the first and second materials, measuring the electrical resistance of the electrical wire (27), calculating a ratio of cross-sections between the part of the first material and the part of the second material, and displacement of the electrical wire (27) covered with a metal continuously for measuring the distribution of the cross-sectional ratio in the longitudinal direction of the electrical wire (27) covered with a metal. Application to checking electrical wires. <IMAGE>