Ah yes -- my Weller gun is black with a red trigger. It was a much desired Christmas present for this compulsive tinkerer, circa 1956. I just used it the other day splicing some #16 stranded on a set of solenoid valves. But that was when "electronics" was Bakelite tube sockets with discrete components wired point to point between big solder lugs. IIRC, Weller is the maker of some pencil type irons that have a built-in temperature regulator that uses some magnetic properties to sense the temp; clever but expensive.