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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.

Specifications:

1、Range of data display： Binocular pupillary distance：44～83mm

       Left or right pupillary distance：22～41.5mm

2、Effective range of measurement：

      Binocular pupillary distance：45～82mm

      Left or right pupillary distance：22.5～41mm

3、Indication error：      ≤0.5mm

4、Rounding error：      ≤0.5mm

5、Distance of target：    30cm～∞

6、Power source：       Voltage：DC 6V

      Specification：5# AA battery

      Quantity：4 pieces

7、Time for automatic shut-off：1 and a half minutes after stopping operation

8、Overall dimensions：   219mm(L)×169mm(W)×86mm(H)

9、Weight：0.7kg

Blue color also in available.