A pretty basic Mannheim rule. You can't really see it in these pictures, but there's a really nice clear plastic ruler on this rule. Also, it comes in a nice plastic case with handy conversion tables! Those clever Europeans, they think of simply everything.
Like the Multilog, this rule's better than you might think for an all-plastic rule. The Aristo rules seem to be made of a nice, heavy plastic that feels substantial, instead of cheap. Also, design features like the clear ruler actually make use of the fact that the rule's plastic.