PD METER in LED Light PD-V
Specifications
Advance design with LED light,simple and life time use.CE,Rohs CerfiticateUses: |
PD Meter is a digital precision optical instrument used to measure distance between human pupils in the process of optometry. |
Characteristics: |
This device is designed in a scientific and reasonable way, integrating technologies on optics, microelectronics. |
MAIN TECHNICAL INDEXES | |
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 3V |
| Specification:AA battery | |
| Quantity:2 or 4 pieces | |
| 7,Time for automatic shut-off: | 1 and a half minute after stopping operation |
| 8,Overall dimensions: | 219mm(L)×169mm(W)×86mm(H) |
| 9,Weight: | 0.69kg |
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