There are few tools more essential
in the development of industry then the file. Perhaps for
the very reason that it is so universally used and so absolutely
indispensible, the file does not commonly receive the attention
it deserves, as a tool, from craftsmen and students.
This book is dedicated to those
innumerable men to whom the file is an everyday friend and a
necessity - the tool which enables to do more and better work
with less labor.
There has been no guide for the
compilation of the material in this book. Information has
been obtained from every available source. It is possible,
therefore, that the wide circulation of the book will bring to
light some omissions, which, we hope, will be passed with
tolerance in view of the difficulties attending compilation of