… and machines, not specified or included elsewhere in this Chapter; profile projectors. …
Explanatory notes
… 9031.10 ‑ Machines for balancing mechanical parts 9031.20 ‑ Test benches - Other optical instruments and … of heading 90.18 . (f) Machines or appliances for testing the mechanical properties of materials ( heading … machines, bridges, dams, etc. (19) Apparatus for checking textile materials , for example, yarn grading winding reels …