Direct-current resistive volt ratio boxes; Amendment A2 (IEC 60524:1975/A2:1997); German version EN 60524:1993/A2:1997
Edition 1999-01

Direct-current resistive volt ratio boxes (IEC 60524:1975 + A1:1981); German version EN 60524:1993
Edition 1994-08

Tyres for earth moving machinery, dumpers and special vehicles in service on and off the road; diagonal ply tyres with a nominal aspect ratio exceeding 90%
Edition 1988-01

Leaching of solid materials - Batch test for the examination of the leaching behaviour of inorganic and organic substances at a liquid to solid ratio of 2 l/kg
Edition 2023-07

Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to maximum working pressure (ISO 7751:2016); German version EN ISO 7751:2016
Edition 2017-06

Fluid power systems and components - Cylinder bores and piston rod diameters and area ratios - Metric series (ISO 3320:2013)
Edition 2016-01

Semiconductor devices - Micro-electromechanical devices - Part 21: Test method for Poisson's ratio of thin film MEMS materials (IEC 62047-21:2014); German version EN 62047-21:2014
Edition 2015-04

Connectors for electronic equipment - Tests and measurements - Part 25-1: Test 25a: Crosstalk ratio (IEC 60512-25-1:2001); German version EN 60512-25-1:2001
Edition 2002-08

Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 2: General astigmatic beams (ISO 11146-2:2021); German version EN ISO 11146-2:2021
Edition 2021-11

Microfilm technique, microfilming of engineering drawings; re-englargement ratios from recordings on film 35 mm minimum requirements
Edition 1986-04