reading a refractometer

...Hand-Held refractometer Product description The Gem Refractometer is an important instrument which measures the refractive indices of stones. It has a pull out eyepiece and a high quality lens that gives clear focus and reading. Provides readings from 1.31...

...the range of 0 - 100 ppt(0 - 10 %). The reading resolution is 1 ppt. It is designed for the measurement of seawater (marine aquaria) or very low concentrated salt solutions. The second scale is for reading of the salt solution density in range 1.000 to 1

... Scale Digital Hand Refractometer Brix Reading 4 In 1 Engine Fluid Glycol This device measures the proportion of antifreeze and freezing of glass cleaner, lead-acid battery electrolyte. IIt has a refractometer with automatic temperature compensation...

...Refractometer with easy to read visual field FGR-003 The refractometer is one of the most important tools in a gemological laboratory. It indicates the refraction index of a gemstone, which often gives vital clues to the identity of a gemstone. Refractometer...

...Refractometer RSG-32ATC Features: With Built-in ATC compensation Range (Automatic Temperature Compensation) from 10°C to 30°C For field use, without having to re-calibrate after changes in ambient working temperature. Soft rubber eye piece for comfortable viewing Equipped with scale measurement which provides direct reading...

... of a gemstone, which often gives vital clues to the identity of a gemstone. Fable brand Refractometer provides a numerical reading from a scale you see when you look through the eyepiece and determine whether a stone with single or double refracting by

... of sugar, pharmaceutical, beverage, petroleum, food, chemical industry production, scientific research and teaching departments. Visual aiming, digital reading, temperature correction can be

..., pharmaceutical, beverage, petroleum, food, chemical industries as well as research institutes and educational department; 4. Visual aim, optical index-plate reading;

...Reading AC or 2 AA Batteries High Precision Spefications: Vertex power range +15diopter-15diopter step 0.12D Prismatic power range 5 prism diopter step 1diopter Cylindrical axis range 0 to 180 degrees step 1 degree Lenses accommodated Diameter 20mm to 80mm Eyepiece focusing -5D to +5D Bulb 220V-110V/6V/3W Product & Service Products: Ophthalmic Instruments: Auto Refractomete