Disclosed is a pressure switch that utilizes a dome switch having a flange surrounding the dome. Embodiments include a fast scannable footed Domino dyanmic latch. For the purpose of cleaning the gap between the back supporting disc pair and the front face side of the step bearing housing, a tube is provided having an entry opening at the operator’s side of the arrangement and leading to the area of the step bearing housing and aligned against the shaft with an opening. By providing a mechanism to mitigate carbon buildup, calibration standards provided by the present invention achieve high accuracy, high durability, and low cost. Combining flexures with rare earth permanent magnets, provides ultra compact Linear Tape Motors with very high power and force densities that hold position with power off.