Yantras or Mechanical Contrivances in Ancient India c2.102

c2.102

The son, who is the actual character figuring in the narrative, and is said to excel his father, is credited with the following achievements, the description of which forms a brief treatise on yantras. Lalitālaya created mechanical men and arranged for the exhibition of a mock-duel between them; he created an artificial cloud and brought down heavy showers; with yantras, he exhibited magic; he devised a machine for war from which shafts as stout as pestles were discharged by him on the heads of elephants.