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Operating instructions, Method of operation (singly refractive), Anisotropic gemstones (doubly refractive) – Xylem E-Line Gemological Refractometer User Manual

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Operating instructions, Method of operation (singly refractive), Anisotropic gemstones (doubly refractive) | Xylem E-Line Gemological Refractometer User Manual | Page 4 / 8 Operating instructions, Method of operation (singly refractive), Anisotropic gemstones (doubly refractive) | Xylem E-Line Gemological Refractometer User Manual | Page 4 / 8