I have one, but no calibration data. Precision was not too free with such things, unlike Hickok who would send copies of the factory procedure to anyone who asked.<P>------------------<BR>

Considering the age,calibration would likely be needed whether or not anyone had touched those adjustments.<BR>Hopefully a previous owner updated the adjustments not too long ago,otherwise somebody is needed who is familiar with tube testers and can analyize the circuitry,perhaps,and do a trial and error procedure of calibration based on circuit knowledge.<BR>Malcolm<P>------------------<BR>