Yantras or Mechanical Contrivances in Ancient India c2.185

c2.185

Five classes of yantras are then mentioned as constituting the five sections of the science of yantras, *yantra-śāstra-adhikāra* (86); the lines not being free from corruption, we are not able to make out these five classes of yantras to which reference is again made later; but movement, such as rotary; material, such as wood; purpose, such as the exhibition of dexterity and the satisfaction of curiosity; utilitarian value and pleasure, as in swings; and form, as in the round yantras (*cakra*) is about the best meaning that I can extract out of the context here.