Lenses, prisms, mirrors and other optical elements, of any material, mounted, being parts of or fittings for instruments or apparatus, other than such elements of glass not optically worked
Lionsaí, priosmaí, scátháin agus eilimintí optúla eile, d'ábhar ar bith, feistithe, atá mar pháirteanna de nó feistithe d'ionstraimí nó gairis, seachas eilimintí gloine den sórt sin nach bhfuil oibrithe go hoptúil