This is particularly handy of you wish to cut your own slides. Don’t know anyne who is in the Minox slides these days, but that doesn’t mean you cannot start your own dia show. Plenty of slide frames to be bought on the Evilbay, cheap too.

Minox loupe and cutter

I do not use this tool, as it scratches badly my precious negatives, when using it as a loupe for viewing frames.