Optics and photonics. Telescopic systems. Specifications for night vision devices1 Scope This International Standard applies to night vision devices such as binoculars, monoculars and goggles that are used for observation activities at night such as rescue actions under low light conditions, urgent repairs in the dark and night time surveillance. The International Standard does not cover thermal imaging technology.

PAS 525 can then be adapted to meet local needs by international organizations that want to derive their national standard

internal phase content of double emulsions or homogeneity of hollow capsules) in manifold academic and industrial areas

– use nuclear reactions to generate long and nearly continuous secondary radiation fields which then are measured by the dosemeter using counting techniques instead of measuring the direct radiation pulse

ISO 52031 provides for optimization of the energy performance of a planned heat emission system or cooling system

Code of practice for laying precast concrete paving blocks and clay pavers for flexible pavements

Note: For the purpose of BS EN 16297-1

It brings up to date the guidance given in the previous edition and takes into account the publication of a number of European Standards published since 1990

and marking for inlet connections for gas cylinder valves for RPD

privileges associated with a particular employment category

and functions of the device when worn by test subjects in simulated practical use

Two methods are provided

which may be the starting point for other