Presidium Duo Tester PDT Diamond Gemstone Tester
Special Features
- Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone
- Industrys thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct
- Large easy to read analog dial with 15 colored gemstones
- Consistent and reliable results every time
- Simple and easy to use
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