The roughness measuring instrument has a receiving device for a feeder device, which serves to drag a roughness sensor over a workpiece surface. The schedule sequence may, for example, reflect the relative times at which a content provider incurred the delivery obligations associated with the advertisements. The user includes a web browser, memory and a display. The grip body having a center hole therethrough for receipt around the threaded end of the expandable baton. Also disclosed are a sheet of the IR absorbing polyvinyl butyral and a glass laminate having the IR absorbing polyvinyl butyral sheet disposed between two sheets of glass.