Presidium gem tester.. don't know much about it, they don't make them anymore and I can't find anybody that repairs them. It turns on but isn't reading properly. Can anyone direct me

Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones : Presidium: Arts, Crafts & Sewing

Torch of New Russia - by Peter Nimitz - Nemets

Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones : Presidium: Arts, Crafts & Sewing

NOTE: The calibration may be affected during shipping. If you have issues, reach out to the seller. INDUSTRIES MOST TRUSTED gemstone tester redesigned

Presidium Instruments Gem Tester II (PGT II) Now with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored

How to Calibrate Presidium Gem Tester ii (PGT II)

Product Review Of The Presidium Gem Tester II — Antiques Arena

How to Calibrate Presidium Gem Tester ii (PGT II)

How to Calibrate Presidium Gem Tester ii (PGT II)

Guide on How to Calibrate Presidium Gem Tester

Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone Industrys thinnest probe tip (0.6mm) for testing

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How to Calibrate Presidium Gem Tester II (PGT II) Tutorial