This pocket book has been prepared as an aid to mechanical engineers engaged in design and manufacture, together with others who require a quick, day-to-day reference for useful workshop information. For easy reference this book is divided into five main parts. This pocket book is not a textbook but is a compilation of useful data. The authors are indebted to the British Standards Institution and to all the industrial and commercial companies in _ the UK and abroad who have cooperated in providing up to date data in so many technical areas.
