• Country
• United States of America (USA)

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: USA

• Year
• 1920 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 221076

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Allen Electric Portostat Voltmeter - Unknown - CUSTOM BUILT: USA

• Dimensions (WHD)
• 3 x 1.63 x 3 inch / 76 x 41 x 76 mm

• Notes
• Allen Electric Portostat Voltmeter;
  For 2 V battery cells. Probably made by Allen Electric Mfg. Co..

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 265 models, 220 with images and 10 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unknown - CUSTOM BUILT: USA