It has a great precision
It works with compressed air
The operating enviroment is safe and clean
The main resource you need is not unlimited and isn't free
It has a simple piping complexity
The necesary resource is very avaidable, becouse is around us
You can't compress the resource that you need for this
It doesn't have a lot of precision
It doesn't have an automatic response
It uses a liquid or fluids as a mode of transmission of the pressure.
Many machines worck with it, pistons, for example
It has much more force than compressed air
It has a response inmediatly
You can compress the necesary resource
It has fire risks, and the operating envroment is not very safe
It has a complex piping system