Description

Superb H. A. Thompson Diamond Nut Wrench • Patented November 2, 1880 • 12″

A superb and well‑preserved H. A. Thompson patented diamond nut wrench, carrying the clear November 2, 1880 patent date and measuring a full 12 inches in length. Thompson’s design is one of the more distinctive entries in the late‑19th‑century wave of adjustable wrench innovation, easily recognized by its diamond‑shaped jaw geometry and mechanically efficient adjustment mechanism.

A standout piece for collectors of patented American wrenches, early mechanical tools, or anyone assembling a representative set of 19th‑century adjustable wrench designs.

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