Galvanizing protects in two ways: 1  It forms a coating of corrosion-resistant zinc which prevents corrosive substances from reaching the more delicate part of the metal. 2  The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.he earliest known example of galvanizing of iron, encountered by Europeans is found on 17th century Indian armor in the Royal Armouries Museum collection. It was named in English via French from the name of Italian scientist Luigi Galvani.
Keyboard and pedals. Almost every modern piano has 88 keys (seven octaves and a bit, from A0 to C7). Many older pianos only have 85 (from A0 to A6), while some manufacturers extend the range further in one or both directions.
1 Petite Grand-This is the smallest of the horizontal pianos. 2  It ranges in size from 4 feet 5 inches to 4 feet 10 inches. 3  It is indeed small but still powerful. 4  Baby Grand-A very popular type of piano which ranges in size from 4 feet 11 inches to 5 feet 6 inches. Upright-This is the tallest among the vertical pianos, with a height ranging from 50 to 60 inches and an approximate width of 58 inches. 2  This is the type of piano your great grandparents or grandparents used to play. 3  When cared for properly, it stands the test of time and maintains its rich tone.