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• LY-9C High Quality and Precise Optical PD MeterFeaturesThe PD Meter is a digital precision optical instrument used to measure distance between human pupils in the means of optometry for fitting spectacles. 1, It employs precise optical structure, the line of sunshine is very clear and exact measurement.The measurement outcomes are displayed digitally,and the left eye and appropriate eye measuring values are displayed separately. 2, Simple and quick measuring operation, and unfastened operation of the direct PD adjustment lever are possible.Combining with the adjustable viewing distance deciding on lever for measuring all type of the viewing distances, the PD measurement is straightforward and precise. 3, When the measuring operation is finished, the car poweroff and reminiscence function,enable to save the power and not to lose the data. 4, It can also be utilized in monocular the left eye and correct eye separately.SpecificationsTechnical DataLY-9SLY-9ATLY-9ALY-9CLY-9ATCLY-9ACLY-9DPacking Dimension28x20x 10cm G.W.1kg Packing Quantity10pcs/ctn Carton Size43x29x52cm Approx G.W11kg

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