fgr 003 refractometer

Brand Name:VANCO

Model Number:FGR-003

Place of Origin:CHINA

... 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

Brand Name:FABLE

Model Number:FGR-003A

Place of Origin:Guangdong, China

... refractometer FGR-003A Model number: FGR-003A Type Testers & Measurements Testing scale 1.35-1.85 Accuracy 0.003 Color Black Size 120mm*42mm*80mm Power supply Unique built-in lithium battery power supply, fully charged can keep the refractometer working...

Place of Origin:China

Brand Name:CNOEC, OPTO-EDU

Model Number:A24.6321

... Refractometer High Hardness CZ Test Prism A24.6321 Professional Optical Design, High Hardness CZ Test Prism, Clear Shadow Boundaries, Special Power Supply A24.6321 Gem Refractometer A B C Scale Range 1.35-1.85, Hard CZ Measuring Prism Accuracy ≤± 0.003...