gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray tubes, television camera tubes) iv cathode-ray tubes for colour television picture iv cathode-ray tubes for black and white or other monochrome television picture iv television camera tubes; image converters and intensifiers...
. - cathode-ray television picture tubes, including video monitor cathode-ray tubes : -- colour -- black and white or other monochrome - television camera tubes; image converters and intensifiers; other photo-cathode tubes - data/graphic display tubes, colour, with a phosphor dot screen pitch smaller...