LY-18 Digital PD ruler
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LY-9G PD, PH, VD meter (Range:45-80mm)
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Item#
LY-9G
Abstract
Can measure PD,PH & VD
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Description
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Product Abstract:
The PD Meter is a digital precision optical instrument used to measure distance between human pupils in the process of optometry for fitting spectacles.
■ Can measure PD,PH and VD.
■ When the measuring operation is finished, the auto poweroff and memory function,enable to save the power and not to lose the data.
■ It can also be used in monocular the left eye and right eye separately.
Product Abstract:
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:
■ 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.■ Can measure PD,PH and VD.
■ When the measuring operation is finished, the auto poweroff and memory function,enable to save the power and not to lose the data.
■ It can also be used in monocular the left eye and right eye separately.
| Specification: | |
| 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 (32pcs 7# AAA battery) |
| Power: | 10W |
| Weight: | 0.6kg |
| Volume: | 21.5(L) x 15(w) x 50(H)cm |
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