The most common use of a hammer to hit a nail is to place parts in machines and break objects. Each hammer is designed and made for a specific job, so hammers can be found in many different types, but they all generally have a handle and a weight on the handle, and often the weight of the hammer is on the same weight on the handle. Weight can be light or heavy. A light hammer is called a soft hammer. Hammer is one of the most basic tools in most professions. The hammer can also be used as a weapon. The hammer is so old in human history that it is often considered one of the first man-made tools. One of the valid standards of hammers is DIN 1041 Germany.