Optics and optical instruments. Test lenses for calibration of focimeters - Test lenses for focimeters used for measuring spectacle lenses Ingestion-build-266356 Electrical bonding straps assist in

Electrical bonding straps assist in preventing such interferences for stable operability of electrical systems

PAS 124 is not to be regarded as a British Standard

in samples of soil and ground water for civil engineering purposes

Measurements are performed by the dynamic stiffness method

All these EMF sources are outside the scope of this standard

Optics and optical instruments. Test lenses for calibration of focimeters - Test lenses for focimeters used for measuring spectacle lenses Ingestion-build-266356 Electrical bonding straps assist in1 Scope This part of ISO 9342 specifies requirements for test lenses for the calibration of focimeters that are used for the measurement of spectacle form lenses. NOTE It is accepted that other test lenses can also be used with powers within the given range, manufactured to the same standard of accuracy and form, but different back vertex powers. However, only lenses with integer nominal powers, as described in Annex A, can be used for the calibration