The Unique Feature of this book is the adoption of Indian Standard.. J. S. Convention has all along being followed throughout the text. Various Table conforming to I. S. have been included. to familiarize the beginners with I. S. Specification. Emphasis Has also been put. as would be seen on analyzing the different problem. given on selection of size of different Machine. Elemental from available standards. In preparing this text all the available books and literature on the subject lnclusive of the valued drawing problem sheets prepared by our Ex-Professor Late A. K. Pal and relevant IS publications have been consulted for which heartfelt gratitude of the author- knows no bounds.