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ISO 3126:2005
Plastics piping systems - Plastics components - Determination of dimensions
ISO 3126:2005 specifies methods for measurement and/or determination of the dimensions of plastics pipes and fittings and the accuracy of the measurement. It specifies procedures for measuring angles, diameters, lengths, squareness and wall thicknesses for the purposes of checking conformity to geometric limits.
International Organization for Standardization [iso]