cz testing prism gem refractometer

... Gem 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...

...Testing Instruments For Inlaid Gemstone FGR-002J Model number: FGR-002J Type Testers & Measurements Testing scale 1.35-1.85 Accuracy 0.002 Color White Size 120mm*42mm*80mm Power supply Two No. 7 batteries or externally connected wide voltage power supply adapters (input voltage 100V-240V, output voltage DC 3V) Eyepiece Diameter of 32mm, with amplification function(4X) Prism type Synthetic cubic zirconia (CZ) testing prism

FGR-003 Gemological Refractometer The refractometer is considered by some to be the most important of all gem identification instruments. It can be indicated (not measures) the refraction index of a gemstone, which often gives vital clues to the identity...

Fully Automatic Refractometer High Resolution Laboratory Optical Refractometer Refractive Index Meter Product Description Innovation points 1. Built-in Peltier temperature control improves accuracy and stability. 2: Dual temperature control at home, ...

All copper antifreeze refractometer RHA-800 Model:RHA-800 This model are designed for measuring the Antifreeze, It can test the concentration of the Antifreeze(ethanol genus,range: 0%~480px) and the freezing point of antifreeze liquid easily. application ...