9 Physical, optical, photographical apparatus, devices and instruments, and weighing, signaling, measuring, counting, recording, monitoring, testing, open and closed-loop control and switching devices, namely, photometers, computer software for controlling, testing, monitoring and stabilizing computer monitor functions and visual displays on computer monitors, computer software for calibrating computer monitor luminance settings and computer monitor parameters, and computer software for storing data regarding settings and parameters of monitors, computer software for remote access to data from computer networks and remote activation of conformance checks of video stability on computer monitors