The Combined Nomenclature (CN), v1:2021
9030: Oscilloscopes, spectrum analysers and other instruments and apparatus for measuring or checking electrical quantities (excl. meters of heading 9028); instruments and apparatus for measuring or detecting alpha, beta, gamma, X-ray, cosmic or other ionising radiations
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=6b82e360-3b3b-4ca9-8ead-47dd359f111d