Ball Drive Dial 4489/C

Jackson Bros. (London) Ltd.; Croydon

Data
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  • Year
  • 1960 ??
  • Category
  • Radio part (not a module) 
  • Radiomuseum.org ID
  • 356156

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Ball Drive Dial 4489/C - Jackson Bros. London Ltd.;
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 4 x 4 x 1.4 inch / 102 x 102 x 36 mm
  • Notes

  • The Jackson Bros ball drive dial has a 4" diameter reversible aluminium scale that is printed 0-100 over 180˚ on one side. The other side is left blank for the customer to engrave.

    The brass friction drive mechanism, which has a reduction ratio of about 6:1, is mainly housed inside the plastic knob. The whole assembly is mounted on the 1/4" shaft of the component and only one other hole (for the anchor pin) is required in the panel. There is sufficient clearance between the drive mechanism and the panel for a component fixing nut or screws.

  • Net weight (2.2 lb = 1 kg)
  • 0.150 kg / 0 lb 5.3 oz (0.33 lb)
  • Mentioned in
  • - - Manufacturers Literature (Manufacturer's specification and fitting instructions.)
  • Author
  • Model page created by Bruce Taylor. See "Data change" for further contributors.

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The model Ball Drive Dial is part of the collections of the following members.

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