Presidium standard+duo probe, old (before oct 2020) models Polishing compounds - cleaning and plating fluids The same lens is available

The same lens is available with a clamp to fix to the edge of ta workbench (if you prefer this

NOTE Zeiss list this as 22mm diameter

See all clearance magnifiers

see calibrating weighing machines

For measuring specific gravity

Presidium standard+duo probe, old (before oct 2020) models Polishing compounds - cleaning and plating fluids The same lens is availableDetails This probe has the old style connector, please check carefully to see if you have an old model or a new model, or it won't fit. It fits the following Presidium electronic gem testers: our ref. Gemtest P Presidium's ref. PGT and also the OLDER versions of our ref. gemtest duo Presidium's ref. PDT S7 Not sure which you have? See our information sheet.