A method and system to dynamically display a presentation of a time duration are described. More specifically, in stopping an internal combustion engine, at a point when the rotation speed of the internal combustion engine becomes less than a prescribed value, the remaining rotation angle required for a cylinder #4 close to a transmission to halt in a compression stroke is calculated. A control circuit determines a time averaged measure of difference between the loop frequency and the received signal frequency, and issues a loss of lock alarm if this averaged difference exceeds a predetermined value. Applications: oil pipes gridding for example. In yet another variation, the computer rack is configured to receive computers with chassis that are adapted for side-by-side placement. In one embodiment, the method includes the steps of projecting a first set of lift pins a first distance above a surface of a substrate support, and projecting a second set of lift pins a second distance above the surface of the substrate support that is less than the first distance.