Use

• 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.

Technical Parameters :

• Range of data display: Binocular pupillary distance4483mm , Left or right pupillary distance2241.5mm
• Effective range of measurementBinocular pupillary distance4582mm, Left or right pupillary distance22.541mm
• Indication error≤0.5mm
• Rounding error≤0.5mm
• Distance of target30cm∞
• Power source:Voltage DC 6V,4 AA battery
• Time for automatic shut-off1 and a half minutes after stopping operation
• Overall dimensions: 219mm(L)×169mm(W)×86mm(H)
• Weight: 0.7kg