The Combined Nomenclature (CN), v1:2019
9023 00 80: Instruments, apparatus and models designed for demonstrational purposes, e.g. in education or exhibitions, unsuitable for other uses (excl.
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=f5446a47-febf-4bd1-98b9-8e347fa96472