LCD video wall has an advantage – scalability. For the size of video walls the limitation is the physical space of the wall or the funding limits. As the LCD technology matured, spacing between LCD displays became smaller and smaller and the LCD displays – brighter and brighter.
http://www.zyodisplay.com/lcd-video-wall/

An aluminum alloy is a composition consisting mainly of aluminum to which other elements have been added. The alloy is made by mixing together the elements when aluminum is molten (liquid), which cools to form a homogeneous solid solution. The other elements may make up as much as 15 percent of the alloy by mass.
http://www.yatfeimould.com/die....-casting/aluminium-a

Abrasives wheel is quite powered wheel used in grinder machines at workshops. It is built with tiny abrasive particles called grit. Grit or similar particles are glued to stay together by a unique bonding material to make wheel structures of various thicknesses.
http://www.winoneabrasives.com/abrasives-wheel/

The expertly designed pogo stick is an innovation in traditional bouncing. Combining traditional methods with modern technology allows both causal jumpers and aspiring Xpogo athletes to perform tricks and achieve higher bounces with ease.
http://www.wanyuscooter.com/pogo-stick/

Honda clutch uses a servo to engage the clutch, taking a signal from the bar-mounted lever, which operates as normal. Because it is all electronic, it can use information such as throttle position, what gear is being used, road speed, engine revolutions and so on and can eliminate ham-fisted actuation by a clueless rider.
http://www.mhclutch.com/honda-clutch/