One needs to be slightly cautious about this type of measurement - the inductance meter measures at a frequency somewhere in the LF range which depends on the inductance being measured - in general, this frequency will not be the same as the intended operating frequency of the loop. The inductance of the loop is fairly frequency dependent due to distributed capacitance, skin and eddy current effects, so the value at the measuring frequency will not be exactly the same as at the operating frequency. This is likely to give only very small errors for moderately sized, single turn LF loops, but could be serious for multi-turn loops with high inductance and stray capacitance, very large loops, or loops for use at MF or HF. Measurement methods which resonate the inductor at the intended operating frequency would then be highly desirable, although more cumbersome.