For apparatus of Heading 85.21

85.22 - Parts and accessories suitable for use solely or principally with the apparatus of heading 85.19 or 85.21. - Pick-up cartridges 8522.90 - Other 8522.10 anato at or^ Sub'ect to the general provisions regarding the classification of parts (see the General Note to Section XVI), this head~ngcovers parts and accessories suitable for use so ely or principally with the apparatus of heamng 85.19 or 85.21. The range of parts and accessories classified here includes : (1) Pick-up cartridges for discs or mechanically recorded sound films. These convert mechanical vibrations (obtained with a stylus which follows the groove in the recorded medium) into electrical impulses. (2) Laser optical reading systems. (3) Magnetic type sound-heads for recording, play-back or erasing. (4) Cassette sha ed adapters which enable sound reproduction from a portable optical disc player thug! a magnetic tape player. (5) Photoelectric sound-heads. (6) Apparatus for winding or unwinding tapes. Essentially this a paratus usually consists of two reel supporting brackets, at least one of which is fitted wit% a device enabling it to be rotated. (7) Tone-arms, tables for turntables. (8) Mounted or unmounted worked sapphires and diamonds for styli. (9) Record cutters. These are component parts of the recording ap aratus. They convert sound vibrations into mechanical vibrations and modify the shape of ti! e groove. (10) Furniture, specially designed and constructed for sound recording or reproducing apparatus. (1 1) Cassettes for cleaning the magnetic heads of sound or video recording or reproducing apparatus, whether or not put up in retail packings together with a cleaning solution. (12) Other specialised parts and accessories for magnetic sound recording or reproducing apparatus, e.g., ma etic erasing heads and bars and erasing machines; magnetic needle-points; scales s owing point reached in Qctation. Pf (13) Other specialised parts and accessories for video recording or reproducing apparatus, e.g., video signal recordin head drums; vacuum devices for maintaining the magnetic tape in contact with the recording eads or pick-ups; tape-winding devices; etc. % The heading excludes : (a) Spools, reels or similar supports, including video or audio cassettes without ma etic tape (classified according to their constituent material, for example, in Chapter 39 or Section 8). (b) Electric motors for sound recording or reproducing ap aratus, not combined with parts or accessories of such recording or reproducing apparatus (heading $'5.01). (c) Recording media of heading 85.23. (d) Devices equipped with sound-heads which are used together with frame viewers on synchronisation tables (heading 90.10).