Abstract: A system and method of estimating the thickness of the individual sheets in a stack of sheets in a print media sheet input stacking tray before printing with an electronic sensing system for electronically detecting individual sheet edges in the stack thereof and a movement system providing a known traversal distance of the sheet edge sensing system relative to one side of the stack to produce multiple signals corresponding to multiple detected individual sheet edges, and dividing that multiplicity of signals into the known traversal movement to estimate the thickness of the individual print media sheets in the stack and provide a corresponding electrical output can be used for automatic control of sheet feeder, printer or finisher functions. A relatively simple contacting or non-contacting sensor may be used.

Abstract: A pet exercise device having outer and inner shells having first and second apertures defined therein, respectively, is provided. The outer shell has a first raised edge extending from an internal surface of the outer shell, wherein the first raised edge extends around the periphery of the first aperture. The inner shell defines an interior compartment and is positioned within the outer shell to form a retaining chamber between the inner and outer shells. A second raised edge extends from an external surface of the inner shell and around the periphery of the second aperture. Further, the first and second apertures are non-coextensive, staggered or otherwise misaligned with one another so that the liquid or solids are retained within the retaining chamber and not allowed to pass through the second apertures and directly out of first apertures.