While the Intertype is the simplest line-casting machine in the world, its mechanism is not without complications, and the average printer has need of an instruction book written in plain manner which will inform him of the workings of the machine, the routine acts necessary to keep it in good running order and simple instructions for the attention to various parts needing occasional replacement or repair.<br><br>The Intertype Corporation, therefore, desiring to be of greatest possible service to all co-laborers in the field of the Graphic Arts, has brought out this book by MacD. Sinclair, whose long experience as a composing machine engineer and as a writer in the composing machine field guarantees the high standard of the work. Mr. Sinclair has had the collaboration of the engineering staff of the Intertype Corporation throughout the preparation of the book.<br><br>This book contains information relative to the difficulties that may arise in the course of the day's work. All of these troubles are not, by any means, common to every machine, but through an operator's inexperience or neglect of the ordinary maintenance requirements, some of those mentioned may occur.