9 scientific, surveying, optical, weighing, measuring, signaling, control and teaching apparatus and instruments, namely, video cameras, liquid crystal displays, strip tension meters, strip flatness meters, thermometers not for medical use, speedometers, pressure gauges, [ angle gauges, distance meters, roughness gauges; ] control devices, namely, flatness control tensioning control; control panels for rolling mills, electrical and magnetic detectors for use with rolling mills; [ frequency meters; ] apparatus for recording, transmission or reproduction of sound or images, namely, signal transmitter; blank magnetic data carriers and calculating machines; data processing equipment, namely, data processors, and computers; stored computer programs for controlling rolling mills