400с

PRACTICAL MECHANICS HANDBOOK

BY

F. J. CAMM

(Fellow, Royal Society of Arts)

Editor of "Practical Engineering," "Practical Mechanics," "Practical Wirolms," "Practical Motorist," and "The Cyclist"

With 390 Illustrations

Fourth Edition

1942

Revised Edition,

CHEMICAL PUBLISHING COMPANY, INC. Brooklyn, N. Y. U. S. A.