IDC Output 4, published in July 1981, was a significant edition in a series of publications by the Industrial Design Centre (IDC) at IIT Bombay. It provides a holistic view of IDC's activities and contributions in 1981, including academic projects, research, and industry interactions. The publication, edited by Prof. S. Nadkarni and K. Munshi, highlights IDC's achievements, projects, and its role in promoting design awareness in both the public and private sectors. It reflects on the centre's development and its impact on shaping India's design landscape. Layout design was managed by Girish Agarkar. The publication also discusses the collaboration with industries and the educational impact IDC has made through its innovative curriculum. This volume emphasises the innovative work of students, such as the 35mm camera, exploration of the potentials of corrugated board, bench drilling machine, redesign of mopeds, etc.