My pride is a still posses and use a mint AVO8 ! and some other gear the @bcat sometimes referred to.
I still have an AVO 8 Mk 4 complete with leather case, didn't like the Mk 5 which was the last in the series I believe, the meter movement was very easily damaged.
With it's much lower input impedience by comparison to later digital multimeters, 20K Ohms/Volt, it was great for testing transistors and diodes, also gave a much better indication of relatively low frequency voltage changes (swings) than a DMM.
Can still remember the old "wet finger" collector to base transistor test, crude but effective!
I also hold a full amateur radio licence, GI0AWK, much later than your impressive G3 issue, long since inactive, had a little "romance" with data comm's, RTTY and AMTOR near the end but the growth of easy internet access just killed it all for me in the end as was the case for many.