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Antique Jefferson Electric Mfg. Co. Chicago No. 25 Coil Tester.Early 20th century ignition coil testing instrument housed in original wood carrying case. Features original Hoyt ammeter, labeled terminals, and original printed instruction diagram inside the lid.Marked:
Jefferson Elec. Mfg. Co.
Chicago
No. 25 Coil TesterAll switches and terminals appear intact. Wood case shows age-appropriate wear, surface marks, and oxidation on hardware consistent with early industrial equipment. Original carry handle present.Untested due to age. Sold as found.Approximate dimensions:
10.5” wide
7” deep
4.5” tallA fantastic piece of early automotive and electrical history — perfect for Model T collectors, antique tool enthusiasts, or industrial display.
