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PD Ruler - PDR 20A
1. It features consecutive measurement, direct point-sampling and high accuracy of orientation, with mechanical hairspring being used to level at the reflecting point of human cornea. 2. It adopts linear sensors of high precision, highly intellectualized electronic system and digital display of measurement results which is more accurate, direct and...
1. Designed for easy hold 2. Cornea reflection light coincidence method is used. 4. This operates by aligning luminous points on the pupils with the measuring line. 5. 3 measurements are given digitally in a single super large LCD window: Right, PD, Left. 6. Resolution Step 0.5mm. etc.
This device is designed in a scientific and reasonable way, integrating technologies on optics, microelectronics.
The "comea reflection light coincidence method" is used. This operates by aligning luminous points on pupils with The measuring line.
1. New added Function: LD measurement (distance form cornea to lenses) 2. Up controlled 3. Super Power Saver 4. Most accurate all-digital records monocular/Binocular PD measurements Wide LCD window displays 5. Very smooth operation 6. Life time LED bulb, replacement is almost not required (100000 hours) 7. Professional appearance
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