measuring advanced and receded anlge with Young-Laplace equation fitting method by rotatinge sample stage method. From video, you can find out that fitting of drop shape is not only for an Axisymmetric Drop Shape when using Young Laplace equation fitting. We used a correcting angle (tilted angle) to correct the direction of  gravity and then to fitting this non-axisymmetric drop shape.  It is more powerful method to measure dynamic contact angle than other method such as  polynomial fitting proposed by other manufactory's.