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Step back into mid-century electrical engineering history with this complete James G. offerdle Co. Major Megger Insulation Resistance Tester. Manufactured in Plymouth Meeting, PA during the 1950s–1960s, this heavy-duty analog meter comes complete with its original vintage carrying case and internal reference papers/scoring sheets—making it a rare find for serious collectors, vintage tool enthusiasts, or industrial decor stylists.
Key Features:
Era: Mid-20th Century (1950s–1960s)
Manufacturer: James G. offerdle Co., Plymouth Meeting, PA
Model: Major Megger Tester
Included Accessories: Original storage/carrying case and internal documentation/paper inserts
Condition: Vintage pre-owned. Heavy-duty cast-metal housing, clear analog megohm (MΩ) scale dial face, and original terminal binding posts (LINE, EARTH, GUARD). Sold as-is for collection, display, or vintage instrumentation use.
Item Specifics:
Brand: James G. offerdle Co.
Type: Insulation Resistance Tester (Megohmmeter)
Country/Region of Manufacture: United States
Material: Cast Metal / Bakelite
