Abstract: A corner piece for covering the corner of a structure with mating walls having siding panels containing multiple shingle impression courses attached thereto includes a first wall having an exterior face with first and second lateral edges and a second wall having an exterior face with first and second lateral edges. The exterior faces of the first and second walls include an ornamental appearance containing a plurality of vertically stacked shingle impressions. The shingle impressions of the exterior faces are staggered at least along the second lateral edges. These staggered shingle portions overlap at least a portion of the siding panels when the siding panels and corner piece are attached to the structure. The staggered shingle portions and multiple shingle impression courses of the siding panels cooperate to give the appearance that the corner piece substantially blends into the siding panels.

Abstract: A method and apparatus (10) for sensing a surface level (24) of fluid (12) in a tank (14) having an electrically conducting pickup tube (20) extending through a wall (16) of the tank (14) and into the fluid (12) includes a time domain reflectometry circuit (40) connected to the tube (20) for generating an incident pulse (68) that travels down the tube (20) and a portion of which is reflected at the surface (24) as a reflected pulse (70,72) which travels back along the tube (20) and is sensed by the circuit (40). The circuit (40) includes a microprocessor (92) which utilizes the elapsed time between the generation of the incident pulse (68) and the receipt of the reflected pulse to determine the position of the surface (24) relative to a reference point and the amount of the fluid (12) in the tank (14) and indicate the amount of fluid at a display (106). The tube (20) forms a transmission line with one of a plate (48), an outer tube (110) and a return tube (130).