Size designation of clothes - Part 4: Determination of the coverage ratios of body measurement tables
Edition 2023-02-22

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) (Endorsed by Asociación Española de Normalización in September of 2021.)
Edition 2021-09-01

Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 1: Stigmatic and simple astigmatic beams (ISO 11146-1:2021) (Endorsed by Asociación Española de Normalización in September of 2021.)
Edition 2021-09-01

Flexible insulating sleeving - Part 3: Specifications for individual types of sleeving - Sheet 248: General purpose, heat-shrinkable, dual wall polyolefin sleeving, flame retarded, shrink ratios 2:1, 3:1, 4:1 (IEC 60684-3-248:2007). (Endorsed by AENOR in September of 2007.)
Edition 2007-09-01

Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to maximum working pressure (ISO 7751:2016)
Edition 2017-05-17

Bio-based products- Use of stable isotope ratios of Carbon, Hydrogen, Oxygen and Nitrogen as tools for verification of the origin of bio-based feedstock and characteristics of production processes - overview of relevant existing applications
Edition 2022-04-27

Specification for direct current ratiometer indicators for aircraft
Edition 1953-11-19

Paints and varnishes - Comparison of contrast ratio (hiding power) of paints of the same type and colour (ISO 2814:1973)
Edition 2006-04

Technische Zeichnungen; Massstäbe
Edition 1986

Sodium and potassium silicates for industrial use; Calculation of the ratio: silicon dioxide/sodium oxide or silicon dioxide/potassium oxide
Edition 1976-02