I have at least 3 Millen grid dip meters. Both the tube and solid state
version have a much better dial calibration than the one you ended up with.
The third one I converted from tube to solid state and had to make a couple
of new scales to restore accuracy.
The only problem I have had with the Millens are on the highest frequency
range, where the contacts for the coil need regular attention.
There may be a difference in coils between the two Millen units (I never
checked). There is no calibration to speak of and the dial accuracy would
be controlled by the coils inserted.
The Heathkit grid dipper is the most interesting, though, as you can talk
into the dial and fm modulate it. That does not work on the Millen.
73, Colin K7FM
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