Ophthalmic instruments. Ophthalmometers1 Scope This International Standard, together with ISO 150041, specifies requirements and test methods for continuously or digitally indicating ophthalmometers. Certain types of ophthalmometer have sufficient resolution and range (see Table 2) to adequately measure the radii of curvature of contact lenses complying with ISO 183693: 2006, 4. 1. 3, and Clause 5. It is assumed that the local corneal front surface and both contact lens surfaces are

Adjustable pallet racking systems

BS EN 1993-1-2:2005 describes the principles

Prestressed poles are lighter and stronger

tools and techniques (Clause 4

Who is BS EN 50549-2 – Requirements for MV distribution networks for

PD 6634-1 serves as your one-stop and reference guide for any and all information on vehicle restraint systems so that you can take safety decisions or design newer products accordingly

This standard is a revision of BS EN 1330-4:2010

procedures and practices are expected to take into account the particular requirements of each organization: its objectives

conductive overshoe sock

test methods and performance criteria for resettable oil mist detectors for use in fire hazard alarm systems installed on marine vessels

By adopting BS EN 15618 the user can improve the efficacy of the upholstery coated fabrics for indoor furniture and help produce a product of higher standard and quality

including operations and maintenance