Feature

●【MEASURING RANGE】: This pupillometer can measure distance monocularlly and binocularlly; monocular: 22.5～41mm; binocular: 45～82mm
●【ACCURACY】: The error of this optical devices indication, asymmetry and rounding values are all less than ±0.5mm
●【ADJUSTABLE LED】 : This PD meters brightness is adjustable; 2.0d compensation for the degree of eyesight is available. The design of LED lamp-house and low power-consumption makes the battery life prolonged
●【HD DISPLAY】: Adopts linear sensors of high precision, highly intellectualized electronic system and digital display of measurement results which is more accurate, direct and easy to read
●【LONG READING TIME】: It does retain the readings on screen while it is on and even in memory when it is switched back on as long as the slide controls have not been moved.The digital PD tester does have a reading which lasts approximately 10 minutes


Description

Brief Introduction of Pupil Distance Meter and Pupil Distance
A precision optical instrument used to measure distance between human pupils in the process of optometry for fitting spectacles.

Pupil Distance:
◆Binocular Pupil Distance VS Monocular Pupil Distance
- Binocular PD: the distance from the center of the pupil of the two eyes.
- Monocular PD: the distance from the center of the pupil of the right or left eye to the nasal centreline.

◆Distant Pupil Distance VS Near Pupil Distance
- Distant PD: the distance between the pupil centers of two eyes when they are looking at the infinite distance.
- Near PD(NCD): the distance between the pupil centers when gazing at a near target, that is, when reading at 30-40 cm or working at close distance.

Product Specifications:
Product Name: Digital display interpupillary distance measuring instrument
Effective Measurement Range: interpupillary distance between eyes 45-82mm; left and right interpupillary distance 22.5-41mm
Indication Error: <0.5mm
Target Distance: 30cm-00
Power Supply: 2 AA dry batteries(no include)
Power: 10w
Automatic Shutdown Time: The initial setting is half a minute after stopping use, and it can also be manually turned off
Packing Weight: 1.0kg
Product Size: 220mmx150mmx50mm

Packing List:
1 * Pupil distance meter(no include power )