Ophthalmic instruments. Perimeters Ingestion-build-89079 BS EN 60439-3 gives supplementary

BS EN 60439-3 gives supplementary requirements for enclosed distribution boards (DBU) which are stationary

These apply especially to those parts of the fittings that are in direct contact with the conductor

BS EN 50085-2-2 does not apply to conduit systems

1413 up to and including 1418

What is BS 5489-1:2020 about

Ophthalmic instruments. Perimeters Ingestion-build-89079 BS EN 60439-3 gives supplementary1 Scope This International Standard specifies requirements and test methods for instruments designed to assess differential light sensitivity in the visual field by the subjective detection of the presence of test stimuli on a defined background. It does not apply to clinical methodologies and other psychophysical tests of the visual field. This International Standard takes precedence over ISO 15004, if differences exist.