FIELD: instruments, in particular, for construction, repairing and maintaining of railroads. SUBSTANCE: device has serial resonance circuit, which includes capacitor and emitting frame, and two receiving frames. In addition device has reference signal frame, which is located between receiving frames. Receiving frames are located in symmetry to each other with respect to emitting frame and reference signal frame. EFFECT: increased precision, simplified design, tuning and use. 3 dwg
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Authors
Dates
2000-06-20—Published
1998-05-05—Filed