FIELD: investigations with use of magnetic and electromagnetic means. SUBSTANCE: invention specifically refers to location of nonmetal, namely, polymer, concrete, asbestos-cement, and so on pipe-lines designed to pipe liquid media such as oil, oil products, water, water solutions and suspensions. One lead of generator of alternating voltage is connected to column of poorly conducting liquid located in pipe-line and its second lead is grounded. Voltage of generator is changed till stable magnetic field springs up. Magnetometer is moved above ground surface. At least one point on surface of the Earth id established where value of magnetic field is maximal. Direction of passage of pipe-line is found by finding of two such points. EFFECT: possibility of positioning of route and depth of lying of nonmetal pipe-line. 2 cl, 1 dwg
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