Title: Theory of Machines Author: S.S. Rattan Publisher: McGraw Hill Education Primary Audience: Undergraduate Engineering Students (Mechanical, Production, Automobile), GATE/IES Aspirants. 1. Overview S.S. Rattan’s Theory of Machines (TOM) is widely considered one of the "Bibles" for mechanical engineering students in India. While "Khurmi" is often the go-to for beginners, Rattan is the preferred choice for those who want to build a strong conceptual foundation and prepare for competitive examinations like GATE, ESE (IES), and PSU interviews. Brother Ptouch - Editor 54 Extra Quality