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Measurement of fiber optic elements - Part 9: Determination of deviation of the roundness and the concentricity of optical fibres

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-14: Examinations and measurements - Error and repeatability of the attenuation settings of a variable optical attenuator

Coal and coke - Mechanical sampling - Part 8: Methods of testing for bias

Recreational diving services - Requirements for rebreather instructor training (ISO 24808:2024); German version EN ISO 24808:2024/A11:2024

Flexible sheets for waterproofing - Determination of length, width and straightness - Part 1: Bitumen sheets for roof waterproofing; German and English version prEN 1848-1:2023

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DIN 620-2

Rolling bearings - Radial bearings - Geometrical product specifications (GPS) and tolerance values

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DIN 620-3

Rolling bearings - Thrust bearings - Geometrical product specifications (GPS) and tolerance values

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prEN 15843

Water quality - Guidance standard on determining the degree of modification of river hydromorphology

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