The calibration set for auto refractometers / keratometers is equipped with 8 samples suitable to cover the whole range of powers of commonly used ophthalmic lenses.
The interval in close steps is designed to ensure control of all measurable powers.
The lenses are made with quality optical glass and with technologies used exclusively for the creation of fine optics.
For the unique identification of the pieces and for their protection, the lenses are inserted in a plastic frame on which the nominal power and the serial number of the set are indicated.
For more information visit the page: Link Autorefractometer Set.