![]() In the last 40 years, all industry has made tremendous strides. The techniques of mass production have accelerated the invention and design of thousands of new products, and provided work for millions of people. Our great skill in making special tools and gauges, coupled with the progressive system of assembly makes it possible to produce practically any type of mechanism in large quantities. This is the fourth step in the industrial revolution. When this war came, although we had not previously made guns and tanks and airplanes in large quantities, we did have this important "know-how." That is why, when the government asked for thousands of items of war equipment, industry was already trained and strong through years of experience in serving our great competitive markets. |