Hickok 539B - Late Model, Calibrated, Very Clean, with a New and Improved Main Meter and AC Line meter 
 
The main (Gm) meter has oversized numbers for ease of reading.
  
See pictures 4, 5, and 6 for calibration specs and some additional information for this Hickok 539B.
 
Please see the calibration and additional work information in the pictures.
 
You can have this 539B calibrated at no charge withing three years of the date of purchase, but will have to pay for the shipping. There may be additional charges if parts are needed such as new rectifiers e.g.  You will receive a calibration card with the date of purchase. 
 
If you have any questions please ask and I will respond ASAP.
 
Please see the calibration information in the pictures.
 
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