This set has12 pieces as is, including one large compass,  one beam compass extension, one divider, three ruling pens, one small compass, one small divider, one small ruling compass, one small screwdriver, and spare parts. All parts in very good and clean condition and working. 

Note: The box is torn and there is a missing part, apparently a ruling pen spare part.

A perfect,  excellent and functional set for professional Geometers and illumination artwork.

Made in Germany.