A method is disclosed for determining a sought object contour in a digital microscope image, which includes a plurality of image elements and reproduces a biological material. The rear plate is perpendicular to the bottom plate for securing an expansion card thereon. A bulk granular solids gravity flow curing vessels comprising a first section having substantially vertical sidewalls, a first velocity adjustment means positioned in the first section and having non-vertical sidewalls, a second section having non-vertical sidewalls, second velocity adjustment means positioned in the second section and having substantially vertical sidewalls is further described. The radius r of this rotation is set so as to satisfy the equation r=02. Consequently, system costs are reduced. The side weights are preferably positioned between the center weighted housing and the toe and heel of the golf putter.