9 Measuring apparatus, namely, technical measuring, testing and checking apparatus and instruments for measuring, testing and checking the temperature, pressure, quantity and concentration of gas and liquids, temperature sensors used in the medical field to measure temperature of medical solutions, gas sensors for measuring gas concentration, pressure measuring apparatus, measuring couplings for measuring temperature, pressure, quantity and concentration of fluids in hydraulic or pneumatic systems, radiation-measuring instruments, resistance measuring instruments, scientific measuring instruments being conductivity meters; apparatus for recording data; data storage devices, namely, blank electronic storage media, blank digital storage media, memory cards, external computer hard drives computer network-attached storage (NAS) hardware; apparatus for the transmission of data; electrical ducts; materials for electricity mains, namely, electric wires and cables; sheaths for electric cables