Manual PD Meter for Pupil Distence Checking
CE and FDA
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 |
|
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 3V |
Specification |
5# AA battery |
|
Quantity: 2 pieces |
Time for automatic shut-off |
approx 1 minute after stopping operation, or turn off manually |
Packages |
233mm(L)×165mm(W)×70mm(H) |
Weight |
0.68kg |