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A universal family of curves gives on one plot the wave resistance, inductance, and capacitance of transmission lines of one or two or four wires. Each curve represents one field pattern. An expanded scale includes the region of very low impedance, usually neglected. The seven field patterns plotted include inner conductors of circular cross section, in or near shields such as a nearby plane, a corner, parallel planes, a trough, and a coaxial square or circle.