Thread: Hickok 539b bias gauge
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Old 4th Jun 2021, 11:55 am   #5
mikko rintala
Triode
 
Join Date: Aug 2018
Location: Kauhava, Finland
Posts: 37
Default Re: Hickok 539b bias gauge
Can you remove the meter cover? If adjust is under that? It s have to be somewhere,the adjust screw.
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