A small curiosity: the Staedtler Mars 510 25 magnesium sharpener.
Why is it a curiosity? Because it appears to be a variant of the famous Möbius+Ruppert 602.
While magnesium weighs much less than brass, in appearance this doppelspitzer is a doppelgänger.
Thank you for showing this sharpener! It can’t be seen often online, and it looks like it is not available easily (not even in Germany). – I assume it works as good as the brass version.
Gunther, thank you for your comment. Yes, even though it appears on the Staedtler Germany website, it was very hard to locate.
Nice that it even shows the sharpening angle.
Matthias – yes, a nice bit of documentation.
And – I didn’t initially notice this – but the two sharpeners are not identical. The brass M+R 602 has a much wider colour pencil ingress opening.