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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. Megger Group Limited - Wikipedia

   en.wikipedia.org/wiki/Megger_Group_Limited

   The company also designed and made other electronic instruments such as signal generators, valve (vacuum tube) testers and valve characteristic meters and specialist equipment for radio servicing. Many of these were intended for both military and commercial use and were made to a very high standard.

4. Love Tester - Wikipedia

   en.wikipedia.org/wiki/Love_Tester

   Furthermore, in Chee-Chai Alien for the Game Boy Color, Chailien No. 113 Rabuta (ラブタ) is a Love Tester with arms and legs. In WarioWare Gold, the Love Tester was featured as a collectable and also an upgraded version called Love Tester 2.0 appears but acts different. One player must draw half a heart while the other finishes it showing ...

5. Keithley Instruments - Wikipedia

   en.wikipedia.org/wiki/Keithley_Instruments

   Keithley Instruments bench-top digital multimeter. Keithley Instruments is a measurement and instrument company headquartered in Solon, Ohio, that develops, manufactures, markets, and sells data acquisition products, as well as complete systems for high-volume production and assembly testing.

6. 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.

7. Fluke Corporation - Wikipedia

   en.wikipedia.org/wiki/Fluke_Corporation

   Pomona Electronics is a company specializing in electronic test equipment and accessories. It was founded in 1951 by Joseph J. and Carl W. Musarra, who were brothers. [7] [8] Founded to manufacture test cable harnesses for examining television cathode-ray tubes. [9] the company started in a factory location around the size of a living room. [9]