Bi-axial tilt monitoring apparatus and method for bi-axial tilt monitoring of an article using a single-axis tilt monitoring device. Typically, the graphics unit includes graphics memory that includes at least two frame buffers, and the processor operates as if it were independently asserting multiple streams of display data to multiple frame buffers for driving multiple displays independently. Treatment steps have a treatment rate or dose attribute and a duration attribute. A device for detecting FIV antibodies is provided. The main wall being adapted to hold a blade so that a blade is interposed between the main wall and guard wall when the guard wall is in its closed position. Then a photoresist layer is formed thereon for etching a via.