• Country
• United States of America (USA)

• Manufacturer / Brand
• Fluke, John, Mfg. Co. Inc.; Everett (WA)

• Year
• 1972 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 116060

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115; 230 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: RMS Differential Voltmeter 931B - Fluke, John, Mfg. Co. Inc.;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 215 x 175 x 300 mm / 8.5 x 6.9 x 11.8 inch

• Notes
• The 931B is a full solid state RMS differential voltmeter. It measures RMS voltages from 5 Hz to 2 MHz over five ranges covering from 100 mV to 1000 V full scale. Accuracy as high as 0.02 % is given, depending upon the ranges.

• Net weight (2.2 lb = 1 kg)
• 2.5 kg / 5 lb 8.1 oz (5.507 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Emilio Ciardiello. See "Data change" for further contributors.

• Other Models

• Here you find 93 models, 88 with images and 66 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Fluke, John, Mfg. Co. Inc.; Everett (WA)