Drawing, marking-out or mathematical calculating instruments (for example, drafting machines, pantographs, protractors, drawing sets, slide rules, disc calculators); instruments for measuring length, for use in the hand (for example, measuring rods and tapes, micrometers, callipers), not specified or included elsewhere in this Chapter

901720 — Other drawing, marking-out or mathematical calculating instruments:

Dụng cụ vẽ, vạch mức hoặc dụng cụ tính toán toán học khác: