Presidium PDT Duo Tester-Identify Diamonds & Colored Stones Muller apply pressure from above and

apply pressure from above and below—not from the sides—to properly seat each joint

designed specifically for Quatro Clearview Hoods

The 23mm lens provides a wide field of view for close inspection of stones

Refillable 12" round leather sandbag — sold empty and ready to fill with sand or steel shot for a customized weight and feel

effectively giving you the service life of two laps in one unit

Presidium PDT Duo Tester-Identify Diamonds & Colored Stones Muller apply pressure from above andThe Presidium PDT Duo Tester combines two distinct testing methods into a single professional instrument, giving jewelers and gemologists the tools needed to accurately identify diamonds, diamond simulants including synthetic moissanite and popular colored gemstones. Unlike a standard thermal tester alone, this unit simultaneously performs both thermal conductivity testing and digital reflectivity measurement through a single probe at the press of one