The PD Meter is a digital precision optical
instrument used to measure distance between human pupils in the process of
optometry for fitting spectacles.
Detailed Product Description:
1, It employs precise optical structure,
the line of light is very clear and precise measurement. The measurement
results are displayed digitally, and the left eye and right eye measuring
values are displayed separately.
2, Simple and rapid measuring operation,
and free operation of the direct PD adjustment lever are possible. Combining
with the adjustable viewing distance selecting lever for measuring all kind of
the viewing distances, the PD measurement is simple and precise.
3, When the measuring operation is
finished, the auto power off and memory function, enable to save the power and
not to lose the data.
4, It can also be used in monocular the
left eye and right eye separately.
Parameter:
Effective range of measurement:
binocular pupillary distance:45-80mm
left or right pupillary distance:22.5-40mm