PD Meter is a digital precision optical instrument used to measure distance between human pupils in the process of optometry.
● 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.
● It 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.
● The design of LED lamp-house and low power-consumption makes the battery life prolonged.
● The brightness of LED is adjustable.
● +2.0D compensation for the degree of eyesight is available.
● Range of measurement: Binocular pupillary distance: 45~82 mm
● Left or right pupillary distance: 22.5~41 mm
● Indication error: ≤0.5 mm
● Rounding error: ≤0.5 mm
● Distance of target: 30 cm~∞
● Power source: Voltage: DC 3V
● Specification: 5# AA battery, Quantity: 2 pieces
T● ime for automatic shut-off: About 1 minute after stopping operation, or turn it off manually.
● Size: 233d × 165w × 70h mm
● Weight: 0.68kg
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