Automatic Electric PD Meter, For Industrial

This is a digital pupillary distance meter,the measuring range is from 48mm to 77mm, 2. By emitting point on the pupil alignment and measurement of light,measurements can be carried out · 3.It employs precise optical structure, the line of light is very clear and precise measurement.4.The Design of LED Lamp-House and Low Power-Consumption Makes The Battery Life Prolonged. · 5.The Brightness of LED Is Adjustable.+2.0d Compensation for The Degree of Eyesight Is Available.