The asteriskos

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EXHIBITS    >    Measuring instruments, tools and machines of the ancient Greeks    >   

The asteriskos


It was a simple surveying instrument suitable for measuring perpendicular angles. It consisted of four plumb lines hanging from the ends of a horizontal cross. It was used in many areas from the division of fields to the making of roads and buildings.

SOURCES: "Ptolemy, The Great Syntaxis of Astronomy (Almagest)", "Archimedes, Psammitis"