Watch cases and accessories. Tests of the resistance to wear, scratching and impacts1 Scope This International Standard specifies tests for the evaluation of the resistance of watch cases and their wristlets to wear, scratching and impacts occurring when wearing the watch. This International Standard is applicable mainly to complete watch cases fitted with wristlets. However, certain tests can be applied to the watch case only, to the complete or partial wristlet, or to specially prepared samples. NOTE In order to simulate the state

a) to establish requirements for a satisfactory level of performance for well-type chamber systems

Requirements revised

The guidance for reference service life is structured into discussions regarding:

This standard is part of a series specifying the vibration

and marking of hand- and machine-operated circular screwing dies and hand-operated die stocks

Who is BS EN 3155-061 - Coaxial electrical contacts class R for aerospace for

or structure services such as elevators

PD 6686: Guidance on directives

The BS 8489 series of standards uses a structured approach to the selection

10 Freeze resistance test

ISO 15175 provides guidance on the relationship between soil properties and groundwater quality

This test method is useful for quality control