Telegraph relay, ca. 1900
Contributed by Maine Historical Society
A telegraph relay, used as a signal amplifier in long-distance circuits, is often referred to as a "pony relay."
The base is cast iron, topped by a wooden plate. Two induction coils with steel covers are attached to a brass frame. Stamped into the wooden plate is the information: "W.U. Tel Co, Morse relay 4-B, 150 ohms."
- Title: Telegraph relay, ca. 1900
- Creator: Western Union Telegraph Co.
- Creation Date: circa 1900
- Subject Date: circa 1900
- Media: Wood, brass, cast iron
- Dimensions (cm): 9 x 23 x 12
- Local Code: 2004.090.0060
- Collection: Central Maine Power Company collection
- Object Type: Physical Object
For more information about this item, contact:
Maine Historical Society
489 Congress Street, Portland, ME 04101
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