• Country
• United States of America (USA)

• Manufacturer / Brand
• Clapp-Eastham Co.; Cambridge, MA

• Year
• 1919

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 213833

• • Brand: Radak

• Main principle
• Tuner pre 1926 (not a wave trap)

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Variometer Type S.S. - Clapp-Eastham Co.; Cambridge,

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes
• The Clapp-Eastham Co. Type S.S. Variometer
  Variometer was available in three sizes: Maximum inductances of 1 millihenry, 5 millihenries, 20 millihenries. Mounted $20; unmounted $16.

• Price in first year of sale
• 20.00 $

• Literature/Schematics (1)
• December 1919 QST magazine page 60

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

• Other Models

• Here you find 130 models, 107 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Clapp-Eastham Co.; Cambridge, MA