microscopes; surgical microscopes; electron microscopes; optical microscopes for scientific purposes; scanning probe microscopes; apparatus and instruments for microscopy; microscope condensers; stereo microscopes; lens barrels for microscopes; pedals for musical instruments, being electric and electronic effects units; electric and electronic effects units for musical instruments; teaching apparatus and instruments; amplifiers for musical instruments; computers and computer hardware; computer hardware; computer hardware and software; computer software and hardware; computer software, firmware and hardware; computer hardware and firmware; computers; computer software products