The largest still in use system is allegedly in a hospital in Munich (Großhadern Clinic).
Also the largest German electronics store (think German version of Radio Shack) had such a system in their main store in Hirschau. I was endlessly fascinated about this as kid when the containers with my BC547s, 1N4001s and NE555s where popping out of the tubes.
Also the largest German electronics store (think German version of Radio Shack) had such a system in their main store in Hirschau. I was endlessly fascinated about this as kid when the containers with my BC547s, 1N4001s and NE555s where popping out of the tubes.