GAOTek Digital Portable Refractometer

This Digital Portable Refractometer has a DS range of -7.50 D to +7.50 D, accuracy of ±0.50D, 5-inch touch screen, and rechargeable lithium battery.

GAOTek RM-140



  • Offers two levels of resolution, 0.25D for detailed measurements and 0.01D for fine adjustments.
  • Features a 5-inch touch screen display for easy navigation and data input.
  • Wi-Fi and USB interfaces for data transfer and printing options
  • Provides accurate results with an accuracy of ±0.50D for both diopters and cylindrical measurements.


Technical Specifications

DS -7.50 D to +7.50 D
Resolution 0.25 D/0.01 D
Accuracy ±0.50 D
Axis 1° to 180°
Accuracy ±5°
Pupil size 0.15 in to 0.35 in (4.0 mm to 9.0 mm)
Resolution 0.039 in (0.1 mm)
Gaze 0° to 20°
Time per measurement  1 s
Fixation target Light flash, attractive sound
 Data interface Wi-Fi, USB
Printer interface USB
Battery Rechargeable lithium batteries, 6 hours of duration, Replaceable
Display 5-inch touch screen
Optical accessories Camera tripods, printer, etc.
Size 7.09 in x 5.12 in x 4.33 in (180 mm ×130 mm× 110 mm)
Weight 1.7 lb (800 g)


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