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2. Karatmeter - Wikipedia

   en.wikipedia.org/wiki/Karatmeter

   There are many models of Gold Purity Testing machines available - from portable (light weight) to industrial grade machines. Apart from X-ray spectrometer technique, other older traditional methods are using the TouchStone and Acid to test the gold purity. But TouchStone and Acid are destructive testing - a tiny sample of gold is cut and then ...

3. Touchstone (assaying tool) - Wikipedia

   en.wikipedia.org/wiki/Touchstone_(assaying_tool)

   This method has been used since ancient times. In modern times, additional tests can be done. The trace will react in different ways to specific concentrations of nitric acid or aqua regia, thereby identifying the quality of the gold: 24 karat gold is not affected but 14 karat gold will show chemical activity.

4. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

   24-karat gold is pure (while 100% purity is very difficult to attain, 24-karat as a designation is permitted in commerce for a minimum of 99.95% purity), 18-karat gold is 18 parts gold, 6 parts another metal (forming an alloy with 75% gold), 12-karat gold is 12 parts gold (12 parts another metal), and so forth.

5. GoldStar - Wikipedia

   en.wikipedia.org/wiki/GoldStar

   GoldStar Precision was a division manufacturing electronic test equipment such as multi-meters and oscilloscopes and industrial electronics. The name was changed to LG Precision with the merger, with many of the same products and model numbers being produced but with new branding.

6. Electronic test equipment - Wikipedia

   en.wikipedia.org/wiki/Electronic_test_equipment

   Electronic test equipment is used to create signals and capture responses from electronic devices under test (DUTs). In this way, the proper operation of the DUT can be proven or faults in the device can be traced. Use of electronic test equipment is essential to any serious work on electronics systems.

7. European stocks perk up as markets slow for Thanksgiving - AOL

   www.aol.com/news/asian-stocks-subdued-dollar...

   Spot gold was up 0.14% at $2,639 per ounce but on course for a near 4% drop in November, its weakest monthly performance in over a year. [GOL/] (Reporting by Harry Robertson in London and Ankur ...