Using some of the keywords in the header (wasserstandsröhren, schmelzfarben and lüsters), I found this at Google books, from 1907:
Deutschlands glas-industrie
http://books.google.com/books?id=S2MZAAAAYAAJ
Glaskugeln are mentioned in the book. That's marbles, right? LOL. I have a long way to go even the help of Winnie and babelfish. Nevermind. Looks like it might just be a directory. But that's more keywords. There sure were a lot of glass companies.
The translation of wasserstandsröhren is water level roar. What is that?! I think I have a lead with "Irrigator mit Thermometer oder Wasserstandsröhre" from a 1910 catalog (link to catalog page).
"Irrigator mit Thermometer oder Wasserstandsröhre" translates to "irrigator with thermometer or water level tube".