The object of this International Standard is to list, and give an overview of, the documents giving the uniform requirements for measuring and testing optical fibres, thereby assisting in the inspection of fibres and cables for commercial (mostly telecommunications) purposes. The individual measurement and test methods are contained in different parts of this standard. They are identified as IEC 60793-1-X, where "X" is an assigned section number, indicating its affiliation to IEC 60793-1. In general, measurements and tests methods apply to all class A multimode fibres and class B single-mode optical fibres covered by IEC 60793-2 series, although there may be exceptions. Clause 1 of each part contains the scope for each particular attribute.