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1° TOOL: A mechanical device intented to make a task easier, Equipment used in a profession.
HERRAMIENTA: Un dispositivo mecánico destinado a facilitar la tarea, Equipo utilizado en una profesión.
2° UTENSIL: An instrumen or device for domestic use, especially in the kitchen.
UTENCILIO: Un instrumento o dispositivo para uso domestico, especialmente en la cocina.
3° DEVICE: Any piece of equipment made of a particular purpose, especially a mechanical or electrical one.
DISPOSITIVO: Cualquier pieza hecha para un propósito particular, especialmente uno mecanico o eléctrico.
4° INSTRUMENT: A device used to produce music. Ameans or agency for achieving an effect. Ameasuring or displaying device.
INSTRUMENTO: Un dispositivo usado para producir música. Un medio o agencia para lograr un efecto. Un dispositivo de medición o visualización.
5° ARTIFACT: An object made or shaped by human hand.
ARTEFACTO: Un objeto hecho o formado por la mano humana.

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The hammer is a percussion tool used to hit directly or indirectamente1 a piece, causing its displacement.

The carpenter's hammer also called ears by the V-shaped piece used to extract nails, began to be used in Roman times. The powerful hydraulic hammers appeared after the Industrial revolution. The first steam hammer was built in France in 1840. For great efforts there are pneumatic hammers, which were used in mining and construction. The jackhammer is a portable hammer drill that bases its operation on compressed air mechanisms. It really works like a hammer, because it does not bore but percutes the surface in order to break it into pieces.

There are also hydraulic hammers with the same operating principle as the pneumatic hammers only that here the fluid is hydraulic oil instead of compressed air, these hammers carry them coupled with industrial excavators. Also important is the range of non-ferrous hammers that exist, with nylon mouths, plastic, rubber or wood and are used to give soft blows where it can not deteriorate the piece being adjusted.