# HS chapter 90: Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof (page 2 of 2) > HS chapter 90 covers optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus… Page 2 of 2. Source: https://border.bot/hs-codes/90?page=2 Last updated: 11 October 2026 [HS codes](https://border.bot/hs-codes) / [Chapter 90](https://border.bot/hs-codes/90) Page 2 of 2: subheadings 101 to 143 of 143. Previous page: [page 1](https://border.bot/hs-codes/90). ## Key facts - Chapter: 90 - Description: Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof - Headings: 32 - Subheadings: 143 - Edition: HS2022 ## What this chapter covers HS chapter 90 covers optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof. It has 32 headings, 90.01 to 90.33, and 143 six-digit subheadings in HS2022. ### [90.25](https://border.bot/hs-codes/9025) Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments - [9025.80](https://border.bot/hs-codes/902580) Other instruments - [9025.90](https://border.bot/hs-codes/902590) Parts and accessories ### [90.26](https://border.bot/hs-codes/9026) Instruments 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 - [9026.10](https://border.bot/hs-codes/902610) For measuring or checking the flow or level of liquids - [9026.20](https://border.bot/hs-codes/902620) For measuring or checking pressure - [9026.80](https://border.bot/hs-codes/902680) Other instruments or apparatus - [9026.90](https://border.bot/hs-codes/902690) Parts and accessories ### [90.27](https://border.bot/hs-codes/9027) Instruments 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 - [9027.10](https://border.bot/hs-codes/902710) Gas or smoke analysis apparatus - [9027.20](https://border.bot/hs-codes/902720) Chromatographs and electrophoresis instruments - [9027.30](https://border.bot/hs-codes/902730) Spectrometers, spectrophotometers and spectrographs using optical radiations (UV, visible, IR) - [9027.50](https://border.bot/hs-codes/902750) Other instruments and apparatus using optical radiations (UV, visible, IR) - [9027.81](https://border.bot/hs-codes/902781) Other instruments and apparatus: Mass spectrometers - [9027.89](https://border.bot/hs-codes/902789) Other instruments and apparatus: Other - [9027.90](https://border.bot/hs-codes/902790) Microtomes; parts and accessories ### [90.28](https://border.bot/hs-codes/9028) Gas, liquid or electricity supply or production meters, including calibrating meters therefor - [9028.10](https://border.bot/hs-codes/902810) Gas meters - [9028.20](https://border.bot/hs-codes/902820) Liquid meters - [9028.30](https://border.bot/hs-codes/902830) Electricity meters - [9028.90](https://border.bot/hs-codes/902890) Parts and accessories ### [90.29](https://border.bot/hs-codes/9029) Revolution counters, production counters, taximeters, mileometers, pedometers and the like; speed indicators and tachometers, other than those of heading 90.14 or 90.15; stroboscopes - [9029.10](https://border.bot/hs-codes/902910) Revolution counters, production counters, taximeters, mileometers, pedometers and the like - [9029.20](https://border.bot/hs-codes/902920) Speed indicators and tachometers; stroboscopes - [9029.90](https://border.bot/hs-codes/902990) Parts and accessories ### [90.30](https://border.bot/hs-codes/9030) Oscilloscopes, 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 - [9030.10](https://border.bot/hs-codes/903010) Instruments and apparatus for measuring or detecting ionising radiations - [9030.20](https://border.bot/hs-codes/903020) Oscilloscopes and oscillographs - [9030.31](https://border.bot/hs-codes/903031) Other instruments and apparatus, for measuring or checking voltage, current, resistance or power (other than those for measuring or checking semiconductor wafers or devices): Multimeters without a recording device - [9030.32](https://border.bot/hs-codes/903032) Other instruments and apparatus, for measuring or checking voltage, current, resistance or power (other than those for measuring or checking semiconductor wafers or devices): Multimeters with a recording device - [9030.33](https://border.bot/hs-codes/903033) Other instruments and apparatus, for measuring or checking voltage, current, resistance or power (other than those for measuring or checking semiconductor wafers or devices): Other, without a recording device - [9030.39](https://border.bot/hs-codes/903039) Other instruments and apparatus, for measuring or checking voltage, current, resistance or power (other than those for measuring or checking semiconductor wafers or devices): Other, with a recording device - [9030.40](https://border.bot/hs-codes/903040) Other instruments and apparatus, specially designed for telecommunications (for example, cross-talk meters, gain measuring instruments, distortion factor meters, psophometers) - [9030.82](https://border.bot/hs-codes/903082) Other instruments and apparatus: For measuring or checking semiconductor wafers or devices (including integrated circuits) - [9030.84](https://border.bot/hs-codes/903084) Other instruments and apparatus: Other, with a recording device - [9030.89](https://border.bot/hs-codes/903089) Other instruments and apparatus: Other - [9030.90](https://border.bot/hs-codes/903090) Parts and accessories ### [90.31](https://border.bot/hs-codes/9031) Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this Chapter; profile projectors - [9031.10](https://border.bot/hs-codes/903110) Machines for balancing mechanical parts - [9031.20](https://border.bot/hs-codes/903120) Test benches - [9031.41](https://border.bot/hs-codes/903141) 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](https://border.bot/hs-codes/903149) Other optical instruments and appliances: Other - [9031.80](https://border.bot/hs-codes/903180) Other instruments, appliances and machines - [9031.90](https://border.bot/hs-codes/903190) Parts and accessories ### [90.32](https://border.bot/hs-codes/9032) Automatic regulating or controlling instruments and apparatus - [9032.10](https://border.bot/hs-codes/903210) Thermostats - [9032.20](https://border.bot/hs-codes/903220) Manostats - [9032.81](https://border.bot/hs-codes/903281) Other instruments and apparatus: Hydraulic or pneumatic - [9032.89](https://border.bot/hs-codes/903289) Other instruments and apparatus: Other - [9032.90](https://border.bot/hs-codes/903290) Parts and accessories ### [90.33](https://border.bot/hs-codes/9033) Parts and accessories (not specified or included elsewhere in this chapter) for machines, appliances, instruments or apparatus of Chapter 90 - [9033.00](https://border.bot/hs-codes/903300) Parts and accessories (not specified or included elsewhere in this chapter) for machines, appliances, instruments or apparatus of Chapter 90 ## What it doesn’t cover Chapter 89, before it, covers ships, boats and floating structures; chapter 91, after it, covers clocks and watches and parts thereof. ## How it is structured Chapter 90 is the first level of the Harmonized System. Its headings add two digits to the chapter number (90.01), and each heading's subheadings add two more. ## In other countries National tariff lines under chapter 90 are live on border.bot for the United States (411 lines, also used by 1 other country). - [United States](https://border.bot/countries/united-states/hs-codes/90): 411 lines, used by 1 other country Page 2 of 2: subheadings 101 to 143 of 143. Previous page: [page 1](https://border.bot/hs-codes/90). - Previous chapter: [89](https://border.bot/hs-codes/89) Ships, boats and floating structures - Next chapter: [91](https://border.bot/hs-codes/91) Clocks and watches and parts thereof ## Frequently asked questions ### What does HS chapter 90 cover? HS chapter 90 covers optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof. ### How many headings and subheadings are in HS chapter 90? HS chapter 90 has 32 headings and 143 six-digit subheadings in HS2022. ### Which countries’ tariffs list national lines in HS chapter 90? National tariff lines under chapter 90 are live on border.bot for the United States (411 lines, also used by 1 other country). ## Sources and updates The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026. This page was last updated on 11 October 2026. Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling. Machine-readable: https://border.bot/hs-codes/90.json?page=2