[Lead Fingers]

Speaking of test equipment, I thought this would be useful information, as it seems some of you do circuit analysis.  I find it often necessary to be able to measure current in a circuit, without having to make alterations that change circuit operating conditions, by use of a clip-on current probe.  For those who want to know what that is see the attached .

I've owned two HP-428A's for some years and find them necessary for doing serious audio work, both tube and transistor.  Here's where you can download the 428A manual:  

https://www.lost-manuals.com/en/manufact...428a#12901

LF