9 Test, measurement and signaling equipment, namely liquid flow sensors, air flow sensors, magnetic sensors, light level sensors, fire detection sensors, heat sensors; radio frequency transmitters, optical transmitters, electro-acoustic transmitters; air transducers, pressure transducers, vacuum transducers, vibration transducers; and electro-optics based photometers, radiometers, reflectometers, transmissometers, monochromators, light sources, waveform analyzers and coating and plating monitors for monitoring films, substrates, coatings and glass