conductive pipe. The measurement is made with a coil. arrangement that produces a magnetic field that opposes the. primary field casing attenuation and phase-shift. The magnitude of the phase shift is a function of the casing electrical. conductivity, magnetic permeability and thickness of the metal present in the. field.
The long-tailed weasel is one of the larger members of the genus Mustela in North America, with a total length of 300â350 mm (12â14 in) and a tail comprising 40â70% of the head and body length. In most populations, females are 10â15% smaller than males, thus making them about the same size as large male stoats.
Weasels at rest will coil up with the. head to tail in the shape of a circle in order to conserve heat. Female long-tailed weasels reach sexual maturity at 3 to 4 months of age, while males usually don't reach maturity until their. second year.