… and other optical elements, of any material, mounted, being parts of or fittings for instruments or apparatus, other …
Explanatory notes
… and other optical elements, of any material, mounted, being parts of or fittings for instruments or apparatus, other … or the like of heading 90.04 ), this heading covers the articles referred to in Items (B), (C) and (D) of the … 90.01 when in a permanent mounting (viz., fitted in a support or frame, etc.) suitable for fitting to an apparatus …