• Country
• United States of America (USA)

• Manufacturer / Brand
• Leeds & Northrup; Philadelphia

• Year
• 1950 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 260517

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

• Wave bands
• - without

• Power type and voltage
• Batteries / addl. power jack / 45 or D: 3 x 1.5 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: 5430 A , Test set I-49 - Leeds & Northrup; Philadelphia

• Dimensions (WHD)
• 230 x 160 x 200 mm / 9.1 x 6.3 x 7.9 inch

• Notes

• Portable Wheatstone bridge, with internal batteries or optional external battery.  Note that if using an external battery, the nominal voltage is 45V.  For battery voltages above 45V, insert in series 10 ohms for every 1V above 45V.
   
  The primary function is the measurement of unknown resistances.
  5 decades of calibrated resistors with multiplier of the detected value by 1, 10, 100, 1000 and 10,000.

• Mentioned in
• Radiosurplus Ieri e Oggi, Italy by Umberto Bianchi, CD editor, 1982

• Author
• Model page created by Etienne Flemal. See "Data change" for further contributors.

• Other Models

• Here you find 15 models, 14 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Leeds & Northrup; Philadelphia