AC Ammeter (three-range version) 433

Weston Laboratories Incorporated; Harvard (MA)

  • Year
  • 1940 ??
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 330344

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: AC Ammeter 433 - Weston Laboratories
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 5 x 5.25 x 3.25 inch / 127 x 133 x 83 mm
  • Notes
  • Weston made two different model 433 meters, one is a three-range AC voltmeter, the other is either a two range or three range AC ammeter.  The three range version has a switch to select 1, 2.5, and 5 ampere scales. Power consumption is 0.5 watts (0.52 VA) at 5 amperes on the 5 ampere range. Price in the 1960 Cenco catalog (two range version) was $102.25 (US). All are hand-calibrated. Weston model 433 meters have a rated accuracy of 0.75% of full scale when used in the horizontal position.

  • Net weight (2.2 lb = 1 kg)
  • 2.5 lb (2 lb 8 oz) / 1.135 kg
  • Mentioned in
  • 1960 Cenco catalog ad (Central Scientific Company)
  • Author
  • Model page created by Rich Post. See "Data change" for further contributors.

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