HS heading 90.31: Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this Chapter; profile projectors

HS heading 90.31 covers measuring or checking instruments, appliances and machines, not specified or included elsewhere in this Chapter; profile projectors. It is in chapter 90 (optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof). It is split into 6 subheadings: 9031.10 (machines for balancing mechanical parts), 9031.20 (test benches), 9031.41 (other optical instruments and appliances, for inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits)), 9031.49 (other optical instruments and appliances, other), 9031.80 (other instruments, appliances and machines) and 9031.90 (parts and accessories). National tariff lines under heading 90.31 are live on border.bot for the United States (21 lines, also used by 1 other country).

• 9031.10Machines for balancing mechanical parts
• 9031.20Test benches
• 9031.41Other optical instruments and appliances: For inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits)
• 9031.49Other optical instruments and appliances: Other
• 9031.80Other instruments, appliances and machines
• 9031.90Parts and accessories

• 90.01Optical fibres and optical fibre bundles; optical fibre cables other than those of heading 85.44; sheets and plates of polarising material; lenses (including contact lenses), prisms, mirrors and other optical elements, of any material, unmounted, other than such elements of glass not optically worked
• 90.02Lenses, prisms, mirrors and other optical elements, of any material, mounted, being parts of or fittings for instruments or apparatus, other than such elements of glass not optically worked
• 90.03Frames and mountings for spectacles, goggles or the like, and parts thereof
• 90.04Spectacles, goggles and the like, corrective, protective or other
• 90.05Binoculars, monoculars, other optical telescopes, and mountings therefor; other astronomical instruments and mountings therefor, but not including instruments for radio-astronomy
• 90.06Photographic (other than cinematographic) cameras; photographic flashlight apparatus and flashbulbs other than discharge lamps of heading 85.39
• 90.07Cinematographic cameras and projectors, whether or not incorporating sound recording or reproducing apparatus
• 90.08Image projectors, other than cinematographic; photographic (other than cinematographic) enlargers and reducers
• 90.10Apparatus and equipment for photographic (including cinematographic) laboratories, not specified or included elsewhere in this Chapter; negatoscopes; projection screens
• 90.11Compound optical microscopes, including those for photomicrography, cinephotomicrography or microprojection
• 90.12Microscopes other than optical microscopes; diffraction apparatus
• 90.13Lasers, other than laser diodes; other optical appliances and instruments, not specified or included elsewhere in this Chapter
• 90.14Direction finding compasses; other navigational instruments and appliances
• 90.15Surveying (including photogrammetrical surveying), hydrographic, oceanographic, hydrological, meteorological or geophysical instruments and appliances, excluding compasses; rangefinders
• 90.16Balances of a sensitivity of 5 cg or better, with or without weights
• 90.17Drawing, marking-out or mathematical calculating instruments (for example, drafting machines, pantographs, protractors, drawing sets, slide rules, disc calculators); instruments for measuring length, for use in the hand (for example, measuring rods and tapes, micrometers, callipers), not specified or included elsewhere in this Chapter
• 90.18Instruments and appliances used in medical, surgical, dental or veterinary sciences, including scintigraphic apparatus, other electro-medical apparatus and sight-testing instruments
• 90.19Mechano-therapy appliances; massage apparatus; psychological aptitude-testing apparatus; ozone therapy, oxygen therapy, aerosol therapy, artificial respiration or other therapeutic respiration apparatus
• 90.20Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters
• 90.21Orthopaedic appliances, including crutches, surgical belts and trusses; splints and other fracture appliances; artificial parts of the body; hearing aids and other appliances which are worn or carried, or implanted in the body, to compensate for a defect or disability
• 90.22Apparatus based on the use of X-rays or of alpha, beta, gamma or other ionising radiations, whether or not for medical, surgical, dental or veterinary uses, including radiography or radiotherapy apparatus, X-ray tubes and other X-ray generators, high tension generators, control panels and desks, screens, examination or treatment tables, chairs and the like
• 90.23Instruments, apparatus and models, designed for demonstrational purposes (for example, in education or exhibitions), unsuitable for other uses
• 90.24Machines and appliances for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for example, metals, wood, textiles, paper, plastics)
• 90.25Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments
• 90.26Instruments and apparatus for measuring or checking the flow, level, pressure or other variables of liquids or gases (for example, flow meters, level gauges, manometers, heat meters), excluding instruments and apparatus of heading 9014, 9015, 9028 or 9032
• 90.27Instruments and apparatus for physical or chemical analysis (for example, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes
• 90.28Gas, liquid or electricity supply or production meters, including calibrating meters therefor
• 90.29Revolution counters, production counters, taximeters, mileometers, pedometers and the like; speed indicators and tachometers, other than those of heading 90.14 or 90.15; stroboscopes
• 90.30Oscilloscopes, spectrum analysers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of heading 90.28; instruments and apparatus for measuring or detecting alpha, beta, gamma, X-ray, cosmic or other ionising radiations
• 90.32Automatic regulating or controlling instruments and apparatus
• 90.33Parts and accessories (not specified or included elsewhere in this chapter) for machines, appliances, instruments or apparatus of Chapter 90

• United States21 lines, used by 1 other country