Barometers; Manometers; Cards with integrated circuits; Electric light switches; Electric wire and cable; Electronic components in the nature of capacitors, connectors, filters, oscillators, relays, switches, transformers, resistors, semiconductors, integrated circuits, rectifiers and transistors; Electronic components, namely, piezoelectric switches; Electronic proximity sensors and switches; Liquid level sensors; Measuring couplings for measuring temperature, pressure, quantity and concentr...