Dynamax Super 50-69D oil-filled rotating-anode x-ray tube unit, serial no.2304, with 0.3 and 1.6 mm focal spots, made by Machlett X-Ray Tubes (Great Britain) Limited - a division of GEC Medical - Wembley, London, England, 1969-1972. Dynamax Super 50-69D oil-filled rotating-anode x-ray tube unit 1969-1972
Dynamax HD 500 oil-filled rotating-anode x-ray tube unit, serial no. F2527, with 1 and 2 mm focal spots, made by Machlett X-Ray Tubes (Great Britain) Limited, Wembley, London, England, 1970-1979. Dynamax HD 500 oil-filled rotating-anode x-ray tube unit 1970-1979
