** This is made from metal frame, so it is very strong and light. And also this is designed to operate easier.
** This is designed to make a precise subjective measurement with the Test chart, and now it was improved to insert the lens and measure the patient eye easier.
** It permits to adjust the PD, axis of the lens, length of the frame, position of the nose pad, so you will make a smooth precise measurement.
** As a maximum 5 PCS. Of the lenses will be inserted, so it will permit the smooth and precise reading of the Test chart.
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