Digital PD Ruler
Handheld digital pupillometer measuring monocular and binocular pupillary distances, near PD, and vertical measurements for precise eyeglass lens centering. Classified under HTS 9018.50.00.00 as ophthalmic measurement instrument. Essential for high Rx and progressive lens dispensing accuracy.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If general precision measuring rulers without ophthalmic pupillary function
Non-medical measuring instruments classified separately
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Import Tips & Compliance
• Include calibration verification against certified mechanical PD rulers
• Document measurement range and resolution specifications
• Provide battery safety and electromagnetic compatibility certifications
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