This Brix Digital Refractometer has 0 to 95% of the measurement range, 1.3000 to 1.7000 of the refractive index Nd and 0.1% of the brix.

Cutting and cooling oils and lubricants are widely used in the electronic, mechanical and optical industry.

This Handheld Auto Refractometer with keratometer has 1s / eye of the data acquisition time, -5.0D to +5.0 of the Cylinder range and -10. OD ~+1O.OD of the Sphere range

This Handheld Auto Refractometer has 1° to 180° of the axis of astigmatism, -10.0D+10.0D of the Sphere range and -0.5D+5.0D of the Cylinder range

This Handheld Auto Refractometer Myopia Hyperopia has -10.0D to +10.0D of the Brix range, -5.0D to +5.0 of the Cylinder range and 1° to 180° of the Axis of astigmatism range

GAOTek portable auto refractometer is an innovative wavefront refractometer that precisely measures refractive errors of patients from 6 months old through adults within just seconds.

GAOTek auto digital refractometer Pocket Brix-Acidity for measuring citrus (Low Acidity & High Acidity), grapes & wine, tomatoes, strawberries and includes everything you need for easy, precise and accurate measurements.

GAOTek auto refractometer vision screener can check the refractive error precisely for different groups of people.

This auto refractometer drug automatic has a brix range 0.0 to 94.0%, measuring range 0.0 to 94.0%, and measurement accuracy 0.1%.

This Auto Refractometer For Children And Adults has a DS accuracy ±0.50 D, axis range 1° to 180°, and pupil distance accuracy 0.03 in (±1 mm).

This auto refractometer ophthalmic product has a cylinder power DC resolution of 0.25 D, axis range of 1° to 180° and axis resolution of 1°.