Explanatory notes
… (three‑dimensional) pictures. Spectacles, pince‑nez, lorgnettes, monocles, etc., used for correcting vision, … polystyrene, etc.), of mica, or of metal (wire gauze, or slotted plates). These articles include sunglasses, … underwater use; removable spectacles (e.g., sunglasses) for fitting to other spectacles (generally corrective …