Product classification

HS code for Mathematical instruments: 9017.80

Mathematical instruments and equipment, n.e.c. in heading no. 9017.

Classification of mathematical instruments under HS 9017.80

Mathematical instruments are classified under HS code 9017.80, which acts as a residual category for instruments and equipment used for mathematical, drawing, or calculating purposes that are not specifically named in other subheadings of heading 9017. Heading 9017 generally covers drawing, marking-out, or mathematical calculating instruments. While subheadings like 9017.20 cover specific drawing instruments like compasses and dividers, 9017.80 includes more specialized or traditional mathematical tools. This includes items like slide rules, which were historically used for complex calculations before the advent of electronic calculators, as well as planimeters used for measuring the area of arbitrary two-dimensional shapes. The classification is driven by the physical and functional characteristics of the tools, which are designed to assist in geometric or mathematical operations through manual or mechanical means rather than electronic processing. These instruments are essential in fields such as engineering, architecture, and navigation where precise physical measurements and calculations are required.

Covers
  • Slide rules
  • Planimeters
  • Mathematical calculating discs and rulers
  • Pantographs for scaling drawings
  • Integrators and harmonic analyzers
  • Set squares and protractors not classified as drawing sets
Also under 9017.80
  • K&E Planimeter
  • W.F. Stanley Pantograph
  • Coradi Integrator
  • Keuffel & Esser Curvimeter
  • Brunton Pocket Transit (for angle measurement)

Codes often confused with 9017.80

Common mistake. Mathematical instruments are often misclassified under HS code 8470, which covers electronic calculators and data processing machines. However, 9017.80 is reserved for mechanical or physical instruments. Another common error is using 9017.20, which is specifically for drawing instruments like compasses; 9017.80 should only be used for instruments that do not fit the description of drawing sets or marking-out tools.

9017.90Drawing, marking-out equipment and mathematical instruments; parts and accessories9017.20Drawing, marking-out or mathematical calculating instruments84.70Calculating machines and pocket-size data recording, reproducing and displaying machines with calculating functions; accounting machines, postage-franking machines, ticket-issuing machines and similar, incorporating a calculating device; cash registers

Top exporters and importers of HS 901780 (the code used for mathematical instruments), 2025

In 2025, the largest exporter of HS 901780 (the code used for mathematical instruments) in UN Comtrade data was China, with 48% of world exports; the largest importer in UN Comtrade data was the United States, with 18% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Figures cover everything classified under HS 901780, not only mathematical instruments.

Top exporters 2025 · share of world exports

  1. 1 China $653M
  2. 2 Germany $114M
  3. 3 Thailand $91M

World total: $1.4B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $216M
  2. 2 Germany $102M
  3. 3 Canada $56M

World total: $1.2B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for mathematical instruments

Brazil splits HS 9017.80 into 2 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about mathematical instruments

What is the HS code for Mathematical instruments?

The HS code for Mathematical instruments is 901780 (Mathematical instruments and equipment; n.e.c. in heading no. 9017). The HS code for mathematical instruments not elsewhere specified is 9017.80.

How do I classify Mathematical instruments for customs?

Mathematical instruments is classified under HS code 901780 — Mathematical instruments and equipment; n.e.c. in heading no. 9017. This is a 6-digit subheading level code.

Are digital calculators included in this HS code?

No, digital or electronic calculators are classified under heading 8470. HS code 9017.80 is for mechanical or manual mathematical tools.

Which countries are the top exporters of mathematical instruments (HS 901780)?

In 2025, the top exporters of HS 901780 (the code used for mathematical instruments) in UN Comtrade data were China ($653M, 48% of world exports), Germany ($114M) and Thailand ($91M). World exports came to about $1.4B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of mathematical instruments (HS 901780)?

In 2025, the top importers of HS 901780 (the code used for mathematical instruments) in UN Comtrade data were the United States ($216M, 18% of world imports), Germany ($102M) and Canada ($56M). World imports came to about $1.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Is the HS code for Mathematical instruments the same in all countries?

The base HS code 901780 for Mathematical instruments is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.

What is the NCM code for mathematical instruments in Brazil?

Brazil splits HS 901780 into 2 NCM codes, so the right one for mathematical instruments depends on the product's details: 9017.80.10 (Measuring rods and tapes), 9017.80.90 (Other hand-held length-measuring instruments).