A tool is but the extension of a man's hand, and a machine is but a complex tool. He that invents a machine augments the power of a man and the well-being of mankind.


In: Lenox R. Lohr, Centennial of Engineering: History and Proceedings of Symposia:, 1852-1952


A tool is but the extension of a man's hand, and a machine is but a complex tool. He that invents a machine augments the power of a man and the...

A tool is but the extension of a man's hand, and a machine is but a complex tool. He that invents a machine augments the power of a man and the...

A tool is but the extension of a man's hand, and a machine is but a complex tool. He that invents a machine augments the power of a man and the...

A tool is but the extension of a man's hand, and a machine is but a complex tool. He that invents a machine augments the power of a man and the...