• Country
• United States of America (USA)

• Manufacturer / Brand
• Ostrander & Co., W. R.; New York City, New York

• Year
• 1922

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 238318

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Variometer - Ostrander & Co., W. R.; New

• Shape
• Miscellaneous shapes - described under notes.

• Notes

• Ostrander Variometer.

• Mentioned in
• November 1922, Radio Service Supplement to the National Electragist magazine.

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ostrander & Co., W. R.; New York City, New York