Today I posted new web pages for three more instrument manufacturers that operated in East Germany.  The catalog excerpts are from a Russian language catalog.  The catalog is undated - I think it's from 1958-1972.  This includes:

• Arnold Fliedner in Ilmenau.  The catalog pages show mercury barometers made by Fliedner. Go to Arnold Fliedner Web Page.
• Glaswerke Ilmenau. The catalog pages show mercury barometers made by Glaswerke Ilmenau.  Go to Glaswerke Ilmenau Web Page.
• Roessel-Messtechnik in Dresden.  The catalog pages show recording instruments made by Roessel.  Go to Roessel-Messtechnik Web Page.