WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
90.17 - Drawing, marking-out or mathematical calculating instruments (for example, drafting machines, pantographs, p~otractors, drawing sets, slide rules, disc calculators); instruments for measuring length, for use in the band (for exam le, measuring rods and tapes, micrometers, callipers), not s p e a e d or inclu ed elsewhere in this Chapter. !i 9017.10 9017.20 90 17.30 9017.80 9017.90 - Drafting tables and machines, whether or not automatic - Other drawing, marking-out or mathematical calculating instruments - Micrometers, callipers and gauges - Other instruments - Parts and accessories This heading includes drawing, markin -out or mathematical calculating instruments. It also includes instruments for measuring lengt ,for use in the hand. g This heading does not, however, include : (a) Mitre boxes and tools used in the graphic arts (e.g., chisels, gouges, etching needles) (Chapter 82). (b) Graphic tablets and digitizers (heading 84.71). (c) Pattern generating apparatus designed to produce masks and reticles from photoresist coated substrates (such as optical, E-beam, focused ion beam, X-ray or laser beam apparatus) (heading 84.86). (d) Co-oxdinatographs of a type used for photogrammetrical purposes (heading 90.15). These include : (A) Drawing instruments. (1) Pantographs and eidographs for smaller, larger or same scale reproductions of maps, lans, drawings, parts to be machined, etc. The heading includes such instruments used ?or course plotting in navigation. (2) Drafting machines enerally using a system of parallelograms, with or without drawing boards or tab es. k The heading also covers drafting machines inco orating automatic data processing machines or working in conjunction with such mac ines. 'R (3) Drawing com asses, dividers, reduction compasses, s ring bows, mathematical drawing pew, &Bing wheels, etc., whether in a case (e-g., awlng sets) or separately. & (4) Set squares (standard, hatching, wood or metal working), adjustable squares, T squares (standard or articulated), drawing curves, rulers (flat, square, hatching (parallel rules), standard, etc.). (5) Protractors, fiom the ordinary protractors found in drawing sets to the complex protractors as used for example, in engineering. (6) Stencils of a kind clearly identifiable as bein specialised as drawing instruments. Stencils not so specialised are classified accor mg to their constituent material. d (B) Marking-out instruments. (Marking-out consists in marking construction lines, etc., on the surface of a part to be machined, sawn, etc.). (1) Beam compasses (marking, carpenters', etc.) with plain or divided laths. (2) Scribers and centre punches. (3) Surface plates used as a datum plane for marking-out or for checkin plane surfaces, etc. Strmght-edges and squares (of cast iron, stone, etc.) with a true p ane surface. K (4) V-blocks and X-blocks for supporting cylindrical workpieces. The headin does not cover engraving tools for working in the hand with self-contained motor (heading 8$.67). (C) Mathematical calculating instruments. Slide rules, disc calculators, cylindrical calculators and other calculating instruments based on the slide rule or other mathematical calculating princi le including, for instance, pocket-type adding and subtracting devices operated by the se ection of numbers with a stylus according to a given procedure. This group also includes rules and discs for calculating hotograph~cexposure times on adjustment by reference to the condition of the sky, time o day, aperture setting, type of subject and sensitivity of emulsion. P P Calculating or accounting machines, however, are excluded (heading 84.70). (D) Instruments for measuring length, for use in the hand. These instruments are capable of indicating the length, i.e., linear dimensions, of the olject to be measured, for exam le a line drawn or imaginary (straight or curved) on the object. The instruments are there ore capable of measuring dimensions such as diameters, de ths, thicknesses and heights which are indicated as a unit of length (e.g., millimetres). d e s e instruments must also have characteristics (size, weight, etc.) which enable them to be held in the hand to carry out the measurement. f Instruments specially designed to be used permanent1 mounted on a stand or other support or connected to machines or other apparatus by means o flexible tubing, cables, etc., to carry out the measurement are excluded (head~ng90.31). T This group includes : (1) Micrometers; instruments having a micrometric head , either of the screw- or screwless-type (the screwless-type inco orate a slide action and are usually electronic). They are used to measure, ;P or example, outside or inside diameters, thicknesses, screw thread pitch. The measurement may be read on the screw itself, on a dial or on a digital display. (2) Callipers (vernier, dial indicating or electronic), for measuring, e.g., diameters, depths, thicknesses. (3) Gauges, having an adjustable measuring device. Gauges without adjustable devices, used only for sizing parts or checking angles, forms, etc. (for example, plug gauges, ring gauges), are excluded (heading 90.31). (ez, (4) Comparators (dial e), used to check the inside or outside tolerance of dimensions reaming or rech cation checks). They incorporate a measurin rod, amplifying dl and transmission system (rack, gear, lever, spring, pneumatic, hy%raulic, etc.). 'Yg P (5) Measuring rods (plain or divided, strai t or folding and measurin tapes (e.g., spring rules, riband-rules, drum wound ands), inclu ing standard ro s, measuring sticks and the like. f The heading excludes measurin devices specially designed for surveying (land chains, levelling staves, ranging poles, ctc5 and winch-type measures for mine s h a h (heading 90.15). (6) Divided scales (school rulers, etc.), including V-shaped rules for measuring the diameter of convex bodies and vemcal measuring apparatus with movable crossheads. (7) Map measurers (opisometers); small instruments with or without a dial, used for measuring distances on maps, plans, etc. PARTS AND ACCESSORIES Sub'ect to the provisions of Notes 1 and 2 to this Cha ter (see the General Ex lanatory Note), the eading also covers arts and accessories identif?able as being suitable or use solely or principally with the macYlines, apparatus and instruments described above, e.f, micrometer extension anvils; stands for slip gauges; micrometer stands; hinges or joints for fo ding rules. h ? -
Notes. 1.- This Chapter does not cover : (a) Articles of a kind used in machines, appliances or for other technical uses, of vulcanised rubber other than hard rubber (heading 40.16), of leather or of composition leather (heading 42.05) or of textile material (heading 59.11); (b) Supporting belts or other support articles of textile material, whose intended effect on the organ to be supported or held derives solely from their elasticity (for example, maternity belts, thoracic support bandages, abdominal support bandages, supports for joints or muscles) (Section XI); (c) Refractory goods of heading 69.03; ceramic wares for laboratory, chemical or other technical uses, of heading 69.09; (d) Glass mirrors, not optically worked, of heading 70.09, or mirrors of base metal or of precious metal, not being optical elements (heading 83.06 or Chapter 71); (e) Goods of heading 70.07, 70.08, 70.11, 70.14, 70.15 or 70.17; (f) Parts of general use, as defined in Note 2 to Section XV, of base metal (Section XV) or similar goods of plastics (Chapter 39); however, articles specially designed for use exclusively in implants in medical, surgical, dental or veterinary sciences are to be classified in heading 90.21; (g) Pumps incorporating measuring devices, of heading 84.13; weight-operated counting or checking machinery, or separately presented weights for balances (heading 84.23); lifting or handling machinery (headings 84.25 to 84.28); paper or paperboard cutting machines of all kinds (heading 84.41); fittings for adjusting work or tools on machine-tools or water-jet cutting machines, of heading 84.66, including fittings with optical devices for reading the scale (for example, “optical” dividing heads) but not those which are in themselves essentially optical instruments (for example, alignment telescopes); calculating machines (heading 84.70); valves or other appliances of heading 84.81; machines and apparatus (including apparatus for the projection or drawing of circuit patterns on sensitised semiconductor materials) of heading 84.86; (h) Searchlights or spotlights of a kind used for cycles or motor vehicles (heading 85.12); portable electric lamps of heading 85.13; cinematographic sound recording, reproducing or re-recording apparatus (heading 85.19); sound-heads (heading 85.22); television cameras, digital cameras and video camera recorders (heading 85.25); radar apparatus, radio navigational aid apparatus or radio remote control apparatus (heading 85.26); connectors for optical fibres, optical fibre bundles or cables (heading 85.36); numerical control apparatus of heading 85.37; sealed beam lamp units of heading 85.39; optical fibre cables of heading 85.44; (ij) Searchlights or spotlights of heading 94.05; (k) Articles of Chapter 95; (l) Monopods, bipods, tripods and similar articles, of heading 96.20; (m) Capacity measures, which are to be classified according to their constituent material; or (n) Spools, reels or similar supports (which are to be classified according to their constituent material, for example, in heading 39.23 or Section XV). 2.- Subject to Note 1 above, parts and accessories for machines, apparatus, instruments or articles of this Chapter are to be classified according to the following rules : (a) Parts and accessories which are goods included in any of the headings of this Chapter or of Chapter 84, 85 or 91 (other than heading 84.87, 85.48 or 90.33) are in all cases to be classified in their respective headings; (b) Other parts and accessories, if suitable for use solely or principally with a particular kind of machine, instrument or apparatus, or with a number of machines, instruments or apparatus of the same heading (including a machine, instrument or apparatus of heading 90.10, 90.13 or 90.31) are to be classified with the machines, instruments or apparatus of that kind; (c) All other parts and accessories are to be classified in heading 90.33. 3.- The provisions of Notes 3 and 4 to Section XVI apply also to this Chapter. 4.- Heading 90.05 does not apply to telescopic sights for fitting to arms, periscopic telescopes for fitting to submarines or tanks, or to telescopes for machines, appliances, instruments or apparatus of this Chapter or Section XVI; such telescopic sights and telescopes are to be classified in heading 90.13. 5.- Measuring or checking optical instruments, appliances or machines which, but for this Note, could be classified both in heading 90.13 and in heading 90.31 are to be classified in heading 90.31. 6.- For the purposes of heading 90.21, the expression “orthopaedic appliances” means appliances for : - Preventing or correcting bodily deformities; or - Supporting or holding parts of the body following an illness, operation or injury. Orthopaedic appliances include footwear and special insoles designed to correct orthopaedic conditions, provided that they are either (1) made to measure or (2) mass-produced, presented singly and not in pairs and designed to fit either foot equally. 7.- Heading 90.32 applies only to : (a) Instruments and apparatus for automatically controlling the flow, level, pressure or other variables of liquids or gases, or for automatically controlling temperature, whether or not their operation depends on an electrical phenomenon which varies according to the factor to be automatically controlled, which are designed to bring this factor to, and maintain it at, a desired value, stabilised against disturbances, by constantly or periodically measuring its actual value; and (b) Automatic regulators of electrical quantities, and instruments or apparatus for automatically controlling non-electrical quantities the operation of which depends on an electrical phenomenon varying according to the factor to be controlled, which are designed to bring this factor to, and maintain it at, a desired value, stabilised against disturbances, by constantly or periodically measuring its actual value.