>In my ARC-25A acft re-creation here, I have the requisite LM meter. In this case, more for looks. But, in the ARC-8 setup, the other LM does a nice job as a calibrator for the BC-348.  One has the external supply with the voltage adjust toggle switches, the other is the tall metal cabinet version with an internal a.c. supply.

Jeep K3HVG

Is that original AC PS or HB ? Or what version LM- ?  I have the tall metal cabinet model, for field use, but it's battery powered.
It's also surprisingly heavy for what it is and how it looks. Every time I move it, I think about selling it. I have the USM-159, the

film strip, transistorized model freq meter as a fallback.

-Hue Miller