Telegraph meter or Galvanometer or Detector by

Telegraph Linemans Galvanometer Q & I Detector by Edison &Swan 1917 Working. I don't have any further details on this. I have no idea what it's worth, but I do know they are not very common, so feel free to make offers. This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "superretroguy" and is located in this country: GB.

• Antique: Yes
• Type: Galvanometer
• Period: 1800 to 1900
• Material: brass and glass

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