Frankfurter Allee 118, Berlin - Friedrichshain 034, Prussia (now the Federal City State of Berlin).
Juwelier und Goldarbeiter / Jeweller and Goldsmith
Founded in 1899. Trometer was out of the jewellery business
and was selling sporting equipment in Grünstraße 5C, by 1905
Purchased steins from: Villeroy & Boch - Mettlach
Reference: Berlin Adressbuch
s/l Félix SCHODER - Zun 23.1.03 C. FEIST sur le haut et F S 
A Prussian idea of the British Union Jack in 1903,on a 1/2L Villeroy & Boch - Mettlach #1526 stein. 
1/2L. A. Trometer Berlin 034. #1526, dated 1900. 