USA HISTORY

Detailed explanation-1: -Interchangeable parts are parts (components) that are identical for practical purposes. They are made to specifications that ensure that they are so nearly identical that they will fit into any assembly of the same type. One such part can freely replace another, without any custom fitting, such as filing.

Detailed explanation-2: -Interchangeable parts is a basic concept of creating identical or nearly identical parts to be mass produced. These parts can then be put together to form a product. For example, cars, computers, furniture, almost all products used today, are made from interchangeable parts.

Detailed explanation-3: -Interchangeable parts, popularized in America when Eli Whitney used them to assemble muskets in the first years of the 19th century, allowed relatively unskilled workers to produce large numbers of weapons quickly and at lower cost, and made repair and replacement of parts infinitely easier.

Detailed explanation-4: -The concept of interchangeable parts was used by Christopher Polhem in the manufacture of clock gears in Sweden at the beginning of the 1700s. The gears were made by machines with precision measurement to insure interchangeability; however, this work was probably not known in America.