Mystery of Stonehenge cylinders has been solved!

Stone 'drums' found in a child's grave were used as an ancient tape measure to plan out the building of the great monument
Experts now suggest that pots were actually a tape measure used in Stone Age
Cylinders with intricate patterns were found 130 years ago in child's grave
Drums were a 'standard measurement' used to plan out the ancient stone circles
Wrapping string around each pot revealed they were mathematically related