The invention relates to a method of performing an optical measurement on a sample, such as an ellipticity measurement. The single hardware pipeline includes multiple stages. A liquid delivery hose connects the liquid delivery pumping portion of the pumping apparatus in fluid communication with the liquid delivery conduit. Thereafter, the receiving end transmits he feedback information of the each calculated sub-matrix. The device contains a channel through which may be inserted a fishing line or a shaft, a multiplicity of arms extending radially from the exterior of the channel, and a multiplicity of blades connected to the arms, wherein the blades extend from the arms in a direction that is substantially parallel to the direction of the channel.