Steam power did not merely spin cotton and roll iron; early in the new century, it also multiplied ten times over the amount of paper that a single worker could produce in a day.

A rotary engine attached to the steam engine enabled shafts to be turned and machines to be driven, resulting in mills using steam power to spin and weave cotton.

The proof test of cotton fibre is the foundation for determining the specifications and the structure of spinning machine's components, and is also the base of spin technics designing.