Under the appearance of a circular Mandala that encloses basic geometric shapes and a multitude of symbols, the archaeometer is a controversial structure that raises a multitude of unknowns that are still unresolved.

Defined as an instrument that synthesizes the keys of all ancient religions and sciences, the proposal for a planisphere of these characteristics "seems" to pose an initiation and knowledge challenge, which has both detractors and supporters, but which does not leave indifferent. to nobody. Its publication, in 1911, was the mission of the so-called "Friends of Joseph-Alexandre Saint Yves D'Alveydre (1842-1909)", who posthumously compiled the notes of their teacher, giving birth to an enigmatic book, which contains...