38270 - Optical instruments & Lenses (Miscellaneous)
38271 - Sighting, Tracking & Fire control equipment, Optical
3827101 - - Sighting, Tracking & Fire-control equipment, Optical type, made from lenses, Prisms, etc.
3827102 - - Sighting, Tracking & Fire-control equipment, Optical type, made from OEM lenses, Prisms, etc.
3827198 - - Sighting, Tracking & Fire-control equipment, Optical type: Parts & Accessories
3827199 - - Parts & Accessories for Sighting, Tracking & Fire-control equipment, Optical type
38272 - Binoculars & Astronomical instruments
3827201 - - Binoculars, Prismatic & Nonprismatic, Terrestrial & Celestial telescopes
3827203 - - Astronomical instruments, other (excl radio astronomy)
3827209 - - Parts & Accessories (incl Mountings) for Binoculars, Optical telescopes & other Astronomical equipment
38273 - Optical instruments & Lenses (General)
3827312 - - Optical test & Inspection equipment incl Standard sources, Modulators, Optical comparators, Interferometers (except optical microscopes)
3827315 - - Optical microscopes
3827317 - - Optical components: Filters & Parts & Accessories
3827321 - - Optical components: Lenses, except ophthalmic focus lenses: Unmounted lenses
3827322 - - Optical components: Lenses, except ophthalmic focus lenses: Mounted lenses: Photographic lenses
3827323 - - Optical components: Lenses, except ophthalmic focus lenses: Mounted lenses: other Mounted lenses
3827329 - - Optical components: other (Prisms, Mirrors, etc.)
3827339 - - Parts & Accessories for Optical microscopes
3827349 - - Parts & Accessories for other Optical instruments
3827359 - - Other Optical instruments, incl Optical alignment & Display instruments & Sighting & Fire control
38274 - Optical instruments & Lenses (General)
3827401 - - Binoculars, Prismatic & Nonprismatic, Terrestrial & Celestial telescopes
3827403 - - Other Astronomical instruments (excl radio astronomy)
3827409 - - Parts & Accessories for Binoculars, Optical telescopes & other Astronomical equipment
3827410 - - Binoculars & Astronomical instruments
3827412 - - Optical test & Inspection equipment incl Standard sources, Modulators, etc.
3827415 - - Optical microscopes
3827417 - - Optical filters & Parts & Accessories
3827420 - - Optical instruments & Lenses (except sighting, Tracking & Fire-control)
3827421 - - Unmounted optical lenses, except ophthalmic focus lenses
3827422 - - Mounted photographic optical lenses, except ophthalmic focus lenses
3827423 - - Other Mounted optical lenses, except ophthalmic focus lenses
3827429 - - Other Optical components (Prisms, Mirrors, etc.)
3827439 - - Parts & Accessories for Optical microscopes
3827449 - - Parts & Accessories for other Optical instruments
3827459 - - Other Optical instruments (incl Optical alignment & Display instruments)
3827XX0 - - Optical instruments & Lenses (Miscellaneous)
3827XX2 - - Optical instruments & Lenses (Miscellaneous : Speciality )