Measuring or checking instruments, appliances and machines, n.e.c. or included in this chapter; profile projectors

903110 Machines; for balancing mechanical parts 903120 Test benches 903141 Optical instruments and appliances; for inspecting semiconductor wafers or devices or for inspecting photomasks or reticles used in manufacturing semiconductor devices, n.e.c. in chapter 90 903149 Optical instruments and appliances; for measuring or checking, n.e.c. in chapter 90 903180 Instruments, appliances and machines; for measuring or checking n.e.c. in chapter 90 903190 Instruments, appliances and machines; parts and accessories for those measuring or checking devices of heading no. 9031