Aist Optics 45~82 mm Optical Digital Pupillary Distance Meter LED PD Pupilometer Interpupillary Measuring Tool Ophthalmic Equipment with LCD Display PDs (battery not included) , White

precision Optical Instruments Pupilometerused to measure the distance between pupils during eyeglasses refraction. It has the characteristics of direct point sampling and high positioning accuracy.
SIMPLE OPERATION & EASY TO USE PD merter Turn the powerpower button to turn the instrument on and off or the pupilometer turns off automatically after operation and retain the memory to ensure longer battery life. Parallax is not induced by this system. The nose & forehead bearer, used to stabilize the instrument against the patients nose and forehead
POWER METHOD 1 AA batteries, due to relevant policies, the batteries are NOT INCLUDED, please kindly understandard. Press and hold the power button 3S! (Remember to press and hold for 2 seconds)
MEASURING ACCURACY±0.1/0.2/0.5mm is adjustable: According to the accuracy requirements of the actual glasses, set the measurement step increment, that is, accuracy, instead of fixed 0.5mm, the measurement results are more reliable.
Sight distance 30CM-200CM adjustable This function is used to measure the interpupillary distance of patients at different sight distances. , Digital Pupilometer If you wear glasses for office, adjust to normal eye distance for measurement. It can also be used in the production and sales of multifocal progressive lenses.