• Year
  • 1936–1955 ??
  • Category
  • Radio part (not a module) 
  • Radiomuseum.org ID
  • 286166
    • alternative name: National Toy Co.
    • Brand: Thrillbox

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: O Dial - National Company; Cambridge &
  • Dimensions (WHD)
  • 3.5 x 3.5 x 0 inch / 89 x 89 x 0 mm
  • Notes
  • The National O Dial was featured in National catalogs as an "inexpensive" dial. It has a bakelite knob on a 3.5-inch nickel silver scale marked 0-100. It has no vernier, making it a direct drive, 1 to 1 ratio.

  • Price in first year of sale
  • 1.50 USD
  • Mentioned in
  • National Company 1939 Catalog
  • Author
  • Model page created by Wayne Childress. See "Data change" for further contributors.

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