PD Meter is a digital precision optical instrument used to measure distance between human pupils in the process of optometry.
This device is designed in a scientific and reasonable way, integrating technologies on optics, microelectronics.
● Range of data display: Binocular pupillary distance: 44~83mm
Left or right pupillary distance: 22~41.5mm
● Effective range of measurement: Binocular pupillary distance: 45~82mm
Left or right pupillary distance:22.5~41mm
● Indication error: ≤0.5mm
● Rounding error: ≤0.5mm
● Distance of target: 30cm~∞
● Power source: Voltage:DC 6V
● Specification: 5# AA battery, Quantity:4 pieces
● Time for automatic shut-off: 1 and a half minutes after stopping operation
● Size: 219d × 169w × 86h mm
● Weight: 0.7kg
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