Left and right rail interval adjusting, connecting, fixing device
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Implement for observation or photographing of jewel and jewelry case
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Observation or photographing tool for jewel such as diamond, and jewel photographing method, using both brightness measuring tool and the photographing tool
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Method for observing or photographing diamond
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Implement for observing jewel or accessory and method for picking up image of diamond or accessory with diamond, using the implement
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Mount-dismount device of automobile engine, etc.
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Method and device for judging brightness of diamond
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Instrument for observing jewels brilliance as diamond, and method of taking photographs with said instrument
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Brightness measuring device of diamond
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Method and instrument for observing or photographing jewel such as diamond
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Brightness observing instrument for gem such as diamond and photographing method for gem using the instrument
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Method and apparatus for judging and measuring brightness of diamond
