X-tube by C.H.F Müller, C 1903
X-ray tube with duplex regulator with date 1903 On the tube is etched; G.M. no.293815 witch is a type numbering of C.H.F Müller. This tube has a bulb diameter of 17cm and has a duplex regulator with mica plates, which was an automatic regulator. When the tube gets “hard” a flash-over from the wire will result in a flashover in the mica which release a little bit of air. This kind of tube was suitable for fluoroscopy and photography and produced in different sizes. The boxwood standard is very decorative.