VTG Strobotac Type 1531-A electronic stroboscope by General Radio TESTED

VTG Strobotac Type 1531-A electronic stroboscope by General Radio

VINTAGE GENERAL RADIO - STROBOTAC - TYPE: 1531-AB ELECTRONIC STROBOSCOPE

General Radio GR STROBOTAC Type 1531

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General Radio Co. Strobotac 1531-A Industrial Stroboscope – Vintage RPM Tester

General Radio 1531-AB Strobotac

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