… Clock or watch glasses and similar glasses, glasses for non-corrective or corrective spectacles, curved, bent, hollowed or the like, …
Explanatory notes
… Clock or watch glasses and similar glasses, glasses for non-corrective or corrective spectacles, curved, bent, hollowed … for non-corrective spectacles (e.g., sun-glasses and other protective spectacles), i.e., glass generally of poorer … of a diameter not usually exceeding 80 cm. This sphere is divided into three or four parts which are in turn cut into …