… measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof …
Explanatory notes
… measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof … bring this factor to, and maintain it at, a desired value, stabilised against disturbances, by constantly or … metal clad with precious metal, precious or semi‑precious stones (natural, synthetic or reconstructed)). (II) …Legal note
… the organ to be supported or held derives solely from their elasticity (for example, maternity belts, thoracic support … but not those which are in themselves essentially optical instruments (for example, alignment telescopes); calculating … bring this factor to, and maintain it at, a desired value, stabilised against disturbances, by constantly or …