As some of the guys here know, I presently collect old analog multimeters.
I recall a picture I saw several years ago of a "wall" of Simpson meters - maybe 50 or more, used to demonstrate reliability. They were all being pulsed with DC of perhaps 0.5 hz or so for years on end and none had failed.
Anybody remember this and where can I get a JPG of this, and maybe a link to the info?
I've tried Google images etc no luck.