[Boatanchors] Re:part needed

[Bob Hardie- W5UQ]

Does anyone remember the "locking mechanism" used on potentiometers?  
You would take the knob off and screw on a locking mechanism that would 
hold the setting.  It was for NORMAL size pots. 

Well, I need one or actually two, for my adjustable power supply.  I 
keep accidentally hitting the settings. 

thanks, Bob W5UQ
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