Fixed swivel mount of precious stone for gem refractometer

• Main Author: GONG KEXIN
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2018
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The utility model discloses a fixed swivel mount of precious stone for gem refractometer, including the fixed unit of support body, plane rotation unit, the fixed unit of precious stone, be equipped with the circumference scale mark on the fixed unit of plane rotation unit or precious stone, the fix...