Size of your piano
We need a length measurement of your grand piano. Its simple just take a tape measure and run it out the length of the lid and pull it towards the front of the piano. When looking downward your tape measure should overhang the keys about an inch. In other words you want the tape measure perpendicular with the very front of the piano. Record the length measurement. The length of most grand pianos corresponds to the model of the piano.
We need a height measurement of your piano. Simply measure from the floor to the very top of the piano.