In the process of optometry,
It is used to measure the distance between two human eyes pupil a digital PD ruler.
Materials:Plastic
1. The instrument uses precise optical structure, the light path is clear, accurate measurement,
digital display of measurement data, and about displayed separately.
2, simple operation, measurement speed.
3, after the end of the measurement with automatic shutdown and memory function, power, and data is not lost.
4, respectively, left or right monocular measurements.
Voltage: 23A 12V DC23AE battery (not include for safety)
Power: 5W
Weight: 0.2kg
Within package box size: 215x122x44mm