Building construction. Tolerances. Expression of dimensional accuracy. Principles and terminology1 Scope This International Standard describes the basic principles for the expression of dimensional deviation in building, and defines the basic terms and definitions relating to the evaluation, specification and verification of accuracy. It is applicable to the manufacture of building components (standard or purpose made), the setting out process, erection and assembly, and the building as a whole. Annex A gives equivalent terms in French and

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This document specifies methods of measurement and associated test conditions that eliminate or reduce the influence of adverse phenomena in order to improve the attainable accuracy of low-resistance measurements

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BS EN 61558-2-2 is applicable to control transformers and power supplies incorporating both control transformers and electronic circuits

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