HS Code Heading 9031

9031.10.00 Machines for balancing mechanical parts 9031.20.00 Test benches 9031.41.00 Optical measuring/checking instruments/appliances for inspecting semiconductor wafers/devices or photomasks/reticle used to mfg such devices 9031.49.10 Profile projectors 9031.49.40 Optical coordinate-measuring machines, nesoi 9031.49.90 Other optical measuring or checking instruments, appliances and machines, nesoi 9031.80.40 Electron beam microscopes fitted with equipment specifically designed for the handling and transport of semiconductor devices or reticles 9031.80.80 Measuring and checking instruments, appliances and machines, nesoi 9031.90.20 Parts and accessories of profile projectors 9031.90.45 Bases and frames for the optical coordinate-measuring machines of subheading 9031.49.40 9031.90.54 Parts & accessories of measuring & checking optical instruments & appliances of subheading 9031.41 or 9031.49.70 9031.90.58 Parts & accessories of measuring & checking optical instruments & appliances, other than test benches or profile projectors, nesoi 9031.90.70 Parts and accessories of articles of subheading 9031.80.40 9031.90.90 Parts and accessories of measuring or checking instruments, appliances and machines, nesoi