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Image / Telegraph spark key

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Title
Telegraph spark key
Contributing Institution
History San Jose Research Library
Collection
History San Jose Online Catalog
Rights Information
Please contact the contributing institution for more information regarding the copyright status of this object.
Description
Telegraph key for spark transmission. Marble base with 3/8" diameter contacts. Curved arm.
Type
image
Identifier
953A1D64-E2A6-46A9-AB48-222146395245
2003-1-5
Subject
Telegraph
Telegraph keys (LCSH)

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