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Show I I Many Moving Parts In Piano ' The piano has more moving parts j than an' other mechanism in regular regu-lar use. It has about three times as many moving parts as an automobile. automo-bile. It is the only object in daily use which requires the use of all of the following items in its construction: construc-tion: Many kinds of wood, ivory, iron, steel, felt, woven cloths, leather, leath-er, rubber, brass, copper, tin, lead, glue, varnish, and paint. Piano manufacturers are the largest users of ivory. Secured only from elephants, ele-phants, 300,000 pounds are imported import-ed into the United States annually, An elephant's tusks produce thirty pounds of ivory, enough to make twenty sets of piano keys. |