Presidium standard+duo probe, old (before oct 2020) models Optical Gem Testers stack it away when not

stack it away when not in use

Takes one 26650 rechargeable lithium battery (extra-large

5 inches) wide X 350mm (14 inches) deep

pictured) four sets of fittings of various shapes

Presidium standard+duo probe, old (before oct 2020) models Optical Gem Testers stack it away when notDetails Available to special order only (which means it cannot be returned), please allow 3 to 5 weeks for delivery. This probe fits very old (pre 2020) Presidium gem testers: our ref. Gemtest P, Presidium's ref. PGT or our ref. gemtest duo, Presidium's ref. PDT S7 These models are long since discontinued, repairs or support not available. Not sure which you have? See our information sheet.