Multi Function Jewelry Gem Microscope Two Lens 40X Magnification Model:FGM-U3-17 Description: Three generations of straight arm base: long-life LED .....
Desktop Electronic gem Spectroscope observe absorption spectrum with screen FTS-CCD Spectroscope is the key instrument to tell the true color from the ...
Desktop Type polariscope Observe the interference pattern With 10mm Conoscope FTP-49 Specification: Product Name Desketop Gem Polariscope Application ...
Interference Ball 18mm large diameter conoscope white color Gem Polariscope FTP-LED Product Application The polariscope is one of the most underestima...