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Sourced from, and and others table border=1>
Country: USA
Manufacturer Accurate Instrument Co. Inc. New York
Year: 1968–1970Service or Lab Equipment tr>
Wave bands- without
Power type 110 Volt AC
Model Tube Tester 257
Dimensions (WHD)350 x 90 x 230 mm / 13.8 x 3.5 x 9.1 inch
Net weight 1 kg / 2 lb 3.2 oz
Initial price47.50 USD