Measurement of fiber optic elements - Part 9: Determination of deviation of the roundness and the concentricity of optical fibers; Text in German and English

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 (IEC 86B/4913/CDV:2024); German and English version prEN IEC 61300-3-14:2024

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

Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method; German version EN 933-1:2025