Ophthalmic optics. Visual acuity testing. Standard and clinical optotypes and their presentation Ingestion-build-134498

Ophthalmic optics. Visual acuity testing. Standard and clinical optotypes and their presentation Ingestion-build-1344981 Scope This document specifies a range of Landolt ring optotypes and describes a method for measuring distance visual acuity under photopic conditions for the purposes of certification or licensing. This document is neither intended as a standard for clinical measurements nor for the certification of blindness or partial sight. Other optotypes used for clinical investigations are described in Annex A for information.

in English and French

ISO 17543‑1 specifies several sets of procedures for geometric tests which can be carried out on different types of spindle heads for comparison

swimming pool engineers

in frequency bands of width one octave

ISO 8 details recommendations that ensure that the editors and publishers of periodicals to identify and present key information in a form that will help users discover

This part of ISO 7278 gives guidance on the procedures and conditions of use to be observed if pulse interpolation is used in conjunction with a pipe or small volume prover and a turbine or displacement meter to improve the discrimination of proving

BS EN 4803 guidelines enable you to design

BS EN 13636 specifies the principles for the implementation of a system of cathodic protection against corrosive attacks on buried metal tanks and associated piping

which enables a guarantee of accuracy corresponding to the special features

PD IEC/TS 62257-9-2:2016 supersedes DD IEC/TS 62257-9-2:2006 which is withdrawn

BS EN 60695-1-30 is a part of an international standard that covers safety guidelines for fire hazard testing

What is BS 1728-23 – Aluminium and aluminium alloys about