The kilogram is defined as being equal to the mass of the International Prototype Kilogram -LRB- IPK -RRB- , Also known by its MISC@1 name .

The official kilogram equals the mass of a particular piece of platinum-iridium metal kept in LOCATION@1 , known as Prototype Kilogram -LRB- IPK -RRB- , Also known by its MISC@1 name .
