• Country
• United States of America (USA)

• Manufacturer / Brand
• Weston Electrical Instrument Co.; Newark, N.J.; (Jewell Electrical Instrument Co.; Chicago, IL)

• Year
• 1934 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 235021

• • alternative name: Jewell

Click on the schematic thumbnail to request the schematic as a free document.

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Microammeter 440 - Weston Electrical Instrument

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 145 x 100 x 50 mm / 5.7 x 3.9 x 2 inch

• Notes

• Super sensitivity double pivoted movable coil Microammeter.

  It is made in two cases types: Surface type for portable instruments and other flush type for inserting in sets such as bridges and potentiometers

  Both types have aluminum cases finished in dull black.

  The portable type is provided with two external  contact screws.

  Meter Range:  0 to 15 Microamps

  Approx.internal resistance: 5.000 ohms

  Scale divisions: 75

  Accurate within : 1,5%

   

   

• Net weight (2.2 lb = 1 kg)
• 1.2 kg / 2 lb 10.3 oz (2.643 lb)

• Price in first year of sale
• 65.00 1934

• Author
• Model page created by Dirson Willig. See "Data change" for further contributors.

• Other Models

• Here you find 189 models, 164 with images and 101 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Weston Electrical Instrument Co.; Newark, N.J.; (Jewell Electrical Instrument Co.; Chicago, IL)