• Country
• Great Britain (UK)

• Manufacturer / Brand
• Ormond Engineering Co. Ltd.; London

• Year
• 1925

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 162441

• Wave bands
• - without

• from Radiomuseum.org
• Model: Filament Rheostat No.4 - Ormond Engineering Co. Ltd.;

• Notes
• Vernier movement. 6 Ohms for bright emitters.

• Literature/Schematics (1)
• Brown Brothers Catalog 1925/26

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 16 models, 13 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ormond Engineering Co. Ltd.; London