Presidium standard+duo probe, new (after oct 2020) models Digital scales - regular lines - resolution 0.1g they are supplied in a

they are supplied in a little polythene bag

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Handheld ring stretcher

The easiest way to do this is to place it over the light source - on a light box

Presidium standard+duo probe, new (after oct 2020) models Digital scales - regular lines - resolution 0.1g they are supplied in aDetails There are two types of probe depending on whether you bought your tester before or after October 2020, please check carefully that you are buying the right one. This probe has the new style connector. It fits the following Presidium electronic gem testers: our ref. Gemtest P2 Presidium's ref. PGTII and also the NEWER versions (this one) of: our ref. gemtest duo Presidium's ref. PDT S7 Not sure which you have? See our information sheet.