United States - Military hand-operated insulation tester...

Military hand-powered insulation tester: This instrument generates a high voltage by itself (usually 500V) via an integrated hand-cranked dynamo to test the quality of insulation under harsh field conditions. Produced in the United States. Type: Test Set I-48-B. With the accompanying technical manual TM 11-2050. The manual is dated October 14, 1944. With original case. Not tested as I have no knowledge of it. In very good condition for its age. Weight: 5 kg. Dimensions: 155 x 200 x 200 mm. Rare in this condition and collectible.

Estimate:$1.12

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