Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles.
Pietra dura (Italian: [ËpjÉËtra ËduËra]) or pietre dure [ËpjÉËtre ËduËre] (see below), called parchin kari or parchinkari in South Asia, is a term for the inlay technique of using cut and fitted, highly polished colored stones to create images. It is considered a decorative art.
In the United States, the fretted dulcimer is better known as the Appalachian or Mountain dulcimer. The hammered dulcimer is rectangular or trapezoidal in shape and has sets of multiple strings with a range of up to three octaves. The instrument is played with two light-weight beaters called hammers that are shaped like long-handled spoons and are used to strike the strings.