Spectacles; Telephones; Alarm installations and alarms; Battery chargers; Clothing for protection against accidents; Computer memory devices; Electronic plotters; Emergency LED signalling flares; Eyewear, namely, sunglasses, eyeglasses and ophthalmic frames and cases therefor; Portable electronic recorder for measuring and recording multiple voltage, current and thermocouple readings from various transducers; Semiconductor devices; Slide or photograph projection apparatus; Surveying machines ...