19th Century Electrical Cable Gauge Salesman Sample film canister Oversize micrometer on a sturdy

Oversize micrometer on a sturdy tin base

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AB - 103847 - 072621

TA - 100721 - 103969

19th Century Electrical Cable Gauge Salesman Sample film canister Oversize micrometer on a sturdy1878; New England Telephone & Telegraph Company Boston, Massachusetts. Glazed wooden display case produced for New England Telephone & Telegraph, housing a graduated set of electrical cable gauge samples used for sales presentation and technical reference. Each cylindrical sample represents a different wire size, topped with exposed conductor material and accompanied by engraved metal plates denoting pair counts and gauge specifications. The samples