X-ray tube. Type of tube suitable for use with moderate currents. Inscribed 'Original Muller X-ray tube No. 81577'.

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: X-ray tube. Type of tube suitable for use with moderate currents. Inscribed 'Original Muller X-ray tube No. 81577'. Wellcome Collection. Source: Wellcome Collection.