Cable jump leads; Dynamometers; Ethernet transceivers; Frequency meters; Lasers, not for medical purposes; Optical fibers; Transformers; USB (universal serial bus) hardware; Electric meters; Electronic devices, namely, handhelds for exchanging data in energy meters or submeters; Extension cables; Flow meters; Radio-frequency power meters; Laser speed detectors; Luminoflux meters; Radar detectors; Microscopes; Fibre optic periscopes