Abstract: A ruler for measuring and marking lengths and angles, relative to a horizontal plane by utilizing gravity. The ruler includes a substrate for being oriented relative to a horizontal plane and for measuring and marking lengths, and angle measuring assembly associated with the substrate for measuring and marking angles. The angle measuring assembly has a pointer whose lowermost end is heavier than its uppermost end, which allows the pointer to always remain vertical, regardless what angle the substrate is oriented relative to the horizontal plane, with the tangle the substrate is oriented relative to the horizontal plane being the angle to be measured and being that angular increment of a scale of the angle measuring assembly that the pointer points too.

Abstract: A jacket with programmable lights in which apertures are provided in the garment through which tri-color light emitting diodes LED's protrude. The LED's are connected to a flexible printed circuit board which adheres to the inner surface of the garment by means of hook and loop pile type fastener material. The lights are fully programmable as to both their color and their activation. LED's may be provided in a fixed format or in a matrix form which permits alpha-numeric displays or graphic displays. The invention may be used for advertising purposes or entertainment purposes with either a stationary or moving display.