9 Scientific, electric, photographic, optical, weighting, measuring apparatus and instruments, namely, bench scales, platform and floor scales, overhead track scales, hopper scales, flow scales, check weighers, weight graders and batchers, combination weight batchers, multi-head weighers, marine scales, marine flow weighers, marine graders, weight labeling machines, weight and price labeling machines, electronic weight indicators in the nature of electronic displays, printers sold as accessories for the aforementioned apparatus and instruments; electric and electronic data processors; electric and electronic computers