An X-ray tube, common type. Inscribed 'Instanta' Tube - Macalister-Wiggin Pattern. Sole British Manufacturers Newton and Wright. Bears Ministry of Munitions Label.

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An X-ray tube, common type. Inscribed 'Instanta' Tube - Macalister-Wiggin Pattern. Sole British Manufacturers Newton and Wright. Bears Ministry of Munitions Label. Wellcome Collection. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.