Explanatory notes
… to 90.12 or 90.15 to 90.30; in particular, the following are therefore excluded : (a) Astronomical instruments of … static or with an electronic balancing device) e.g., armatures, rotors, crank shafts, connecting rods, propeller … in the cylinders. (5) Planimeters , for measuring plane areas (e.g., on plans, diagrams, skins or hides). A tracing …