Antagonistic pairs of muscles are muscle where one move the bone in one direction and the other moves it back the other way in transmission of nerve impulses to the muscles.
Demag, which manufactures and distributes telescopic and lattice boom cranes, is one of the leading mobile crane producers worldwide, with 2001 revenues of approximately $360 million.
A boom truck crane is a type of boom truck that can be used like a crane. These vehicles are often found in construction areas and hard to reach places where a heavy lifting vehicle is required. A boom truck crane can lift different tonnages and are stationary when lifting.