The Unique Compass of Alice Pythodoroscox is a 312 years old piece made by Alice Pythodoroscox, a engineer living in Barcelona.
Considering its age and the quality of the work, people consider it of some value.
It is engraved with european patterns and some symbols pertaining to Lutheranism.
Though exposed in this museum, this piece belongs to the last of the Pythodoroscox family, Daria, currently living in Istanbul / Constantinople / Byzantium.