Former German company located Böcklingstrasse 2 (now Lommelstr.) in a southern district of Munich (München-Solln). The company name "Moment-Apparate" appears on the user instructions. It was registered in 1937/38? by Carl's wife Erika von Stein-Liebenstein zu Barchfeld. The inscription in the telephone book of Munich for the year 1942 is "Stein, Carl von, (HR), Messgeräte u. elektr.techn. Apparate " (i.e. measuring and electrotechnical instruments). The abbréviation HR = Handelsregisterindicates that the company was registered).During the first air bombing of Munich on September 19, 1942, a bomb hit the house no. 1 on the opposite side of the street and which belonged to the industrial manager Rodenstock (optics). The company was no longer listed in the telefone books in the following years. We assume thus that their house (and maybe the family itself) was probably also badly hit.