Gem Testers
Fuzhou Zhongtuo Optoelectronic Co.,Ltd
A diamond tester is a portable device used to check the authenticity of diamonds and test materials for their thermal and electrical conductivity. It can accurately indicate if the stone is a real diamond based on the gem's physical properties.
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Built-in LED Gem Tester
Fuzhou Zhongtuo Optoelectronic Co.,Ltd
Gem Tester Refractive index is one of most important optical parameter. Gloss of gem can be estimated by the parameter.The kinds of gem can be precisely determined in accordance with the measured value of refractive index because every kind of gem has its inherent refractive. Besides, index of double refraction can be also measured. Through the parameter you can judge whether a gem is uniaxial or biaxial photopositive or photonegative.
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product
External Flashlight Gem Tester
Fuzhou Zhongtuo Optoelectronic Co.,Ltd
Gem Tester Refractive index is one of most important optical parameter. Gloss of gem can be estimated by the parameter.The kinds of gem can be precisely determined in accordance with the measured value of refractive index because every kind of gem has its inherent refractive. Besides, index of double refraction can be also measured. Through the parameter you can judge whether a gem is uniaxial or biaxial photopositive or photonegative.
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product
External DC12V Power Gem Tester
Fuzhou Zhongtuo Optoelectronic Co.,Ltd
12V power supplies (or 12VDC power supplies) are one of the most common power supplies in use today. In general, a 12VDC output is obtained from a 120VAC or 240VAC input using a combination of transformers, diodes and transistors.
