Specifications:
Measurement:Corneal reflex spot overlap
Range:40-82mm (Total Pupil) ,20-41mm (single eye)
Increment:0.1mm
LCD Screen
Focal point target:Light at the green spot
Range of the focus point:30cm ~ ∞
Diopter adjustment:Provide
Vision:Provide
Light bulb:LED
Power:4.5V DC (AA, SUM-3 cells × 3 section)
Size:155 (W) × 255 (D) × 55 (H) mm
Weight:690g
Features:
1, using the corneal reflex points overlap measurement method,highlight of the pupil will be on the alignment of measurement lines.
2, figures show that the results can provide three kinds of measurements: Right, Right + Left, Left.
3, the result is accurate to 0.1mm.
4, focal point range from 30cm to infinity.
5, Single eye and two eyes both can be measured.

Summary:
The PD Meter is a digital precision optical instrument used to measure distance
between human pupils in the process of optometry for fitting spectacles.
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 poweroff 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
Indication error: ≤0.5mm
Distance of targent: 30cm ～ ∞
Electric Voltage：DC 4.5V(3pcs 5# AA battery)

Summary:
It is a digital precision optical instrument used to measure distance
between human pupils in the process of optometry for fitting spectacles.
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.
3, When the measuring operation is finished, the auto poweroff 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:
Electric Voltage：23A 12V battery
Power：5W
Weight：0.2kg
Volume：21.5(L)x12.2(w)x44(H)cm

Features:
1.PD meter is a digital precision optical instrument used to measure distance between human pupils in the process of optometry.
2.This device is designed in a scientific and reasonable way, integrting technologies on optical, microelectronics.
3.Flexible
4.Stylish design
5.Three colors optional :Blue ,Black, Gray
Specification:
Range of date display : Binocular pupillary distance : 44~83mm
Left or right pupillary distance : 22mm~41.5mm
Effective range of measurement: Binocular pupillary distance : 45~82mm
Left or right pupillary distance : 22.5mm~41mm
Indication error: <0.5mm
Rounding error:<0.5mm
Distance of target: 30cm~∞
Power source: Voltage : DC 3V; Specification :5# AA battery; quantity :2pieces~4 pieces
Time for automatic shut-off : 1 and a half minutes after stopping operation
Overall dimensions: 219mm(L)x169mm(W)x86mm(H)

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 poweroff 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
Indication error: ≤0.5mm
Distance of targent: 30cm ～ ∞
Electric Voltage：DC 4.5V(3pcs 5# AA battery)
Power：10W
Weight：0.6kg
Volume：21.5(L)x15(w)x50(H)cm

This could be the best PD meter in China .

With very high quality and eaxct PD testing .

Main Technical Indexes

Effective range of measurement:
Binocular pupillary distance: 45~82 mm
Indication error: ≤0.5 mm
Rounding error: ≤0.5 mm
Distance of target: 30 cm~∞
Power source: Voltage: DC 3V
Specification: 5# AA battery
Quantity: 2 pieces
Time for automatic shut-off:
About 1 minute after stopping operation, or turn it off manually.
Size:233mm(L)×165mm(W)×70mm(H)
Carton size:263*200*95mm Net Weight: 0.68kg Gross weight:1kg