• Country
• Netherlands

• Manufacturer / Brand
• Philips; Eindhoven (tubes international!); Miniwatt

• Year
• 1948

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 96969

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

• Number of Tubes
• 1

• Valves / Tubes
• AZ1

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110-240 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Universal meter GM4257 - Philips; Eindhoven tubes

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 440 x 300 x 220 mm / 17.3 x 11.8 x 8.7 inch

• Notes
• Two parts: switchbox and meter.
  The meter has four ranges: 0 - 500, 0 - 200, infinity - 0 Ohm and 0 - infinity uF. The switchbox can be switched to the following ranges:
  tension DC: 1, 2, 5, 20, 50, 200 and 500 Volt;
  tension AC: 2, 5, 20, 50, 200 and 500 Volt;
  current DC: 2, 5, 20, 50, 200, 500 and 2000 mA;
  current AC: 50, 200, 500 and 2000 mA;
  0,5 - 100 Ohm;
  5 - 1000 Ohm;
  50 - 10000 Ohm;
  500 - 100000 Ohm;
  0,005 - 1 Megohm;
  0,05 - 10 Megohm;
  0,25 - 50 Megohm;
  500 - 20000 pF;
  5000 - 200000 pF;
  0,05 - 2 µF;
  0,5 - 20 µF;
  5 - 200 µF.
  The switchbox has 6 AC output connectors: 100 V, 125 V, 145 V, 200 V, 220 V and 245 V. This current comes from an isolation transformer. The switchbox has two extra positions for measuring this current (500 and 2000 mA).

• Net weight (2.2 lb = 1 kg)
• 21 kg / 46 lb 4.1 oz (46.256 lb)

• Price in first year of sale
• 750.00 HFL

• Mentioned in
• -- Original-techn. papers. (Electronenbuizen IIIa)

• Author
• Model page created by Piet Blaas. See "Data change" for further contributors.

• Other Models

• Here you find 5244 models, 4384 with images and 3447 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips; Eindhoven (tubes international!); Miniwatt