Want to use one of the most advanced testers in the world? Then you want this easy-to-use tester. M-24 precisely determines gold karat values equal to or greater than 9K, 10K, 12K, 14K, 16K, 18K, 20K, 22K and 24K. Battery operated and comes with a two year warranty.
Find this tool at: http://www.jewelrytools.com/eurotool/jewelry-testing-supplies/RS-Mizar-M-24-Gold-Tester.html
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