Yantras or Mechanical Contrivances in Ancient India c2.207

c2.207

In the *Vasanta* type the yantra is planted in a dugout 8 cubits square and 4 cubits deep; both metal and woodwork are mentioned at the base of the yantra where the rotation-mechanism is fitted to a platform. A storey is to be raised on twelve posts; on the whole five machines are to be employed for the rotation, wheel acting upon wheel and the whole moving the storey, designed like a lotus and accommodating the whirling riders (175-87).