• Country
• United States of America (USA)

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

• Year
• 1900 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 160374

• • alternative name: Jewell

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Portable AC & DC Voltmeter - Weston Electrical Instrument

• Shape
• Tablemodel, with any shape - general.

• Notes
• Weston Standard Portable Alternating and Direct Current Voltmeter.
  Calibration document enclosed in lid of the wooden box gives some data, valid for instrument No. 225:
  Resistance of 300 Volt coil at 70°F = 5199.5 Ohms. Resistance of 150 Volt coil at 70°F = 2599.8 Ohms. Standardized at Weston Laboratories Newark, N.J. U.S.A., April 8th, 1896. Plate between screw terminals indicates instrument patented in 1890.

• Net weight (2.2 lb = 1 kg)
• 6 lb (6 lb 0 oz) / 2.724 kg

• Source of data
• -- Original prospect or advert

• Author
• Model page created by Meyer Rochwerger. See "Data change" for further contributors.

• Other Models

• Here you find 189 models, 165 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)