Abstract: A light-emitting indicator comprising: a housing having a longitudinal bore therethrough, a moveable member at least partially positioned within said bore, a light-emitting diode operable as a function of the position of the moveable member within the bore, a lens for displaying the light emitted from said light-emitting diode, and a bore provided in the upper portion of the moveable member for containing the light-emitting diode within the moveable member when the indicator is in its first operative position.

Abstract: An angulated indicator lens secured to the top portion of a relay valve for providing maximum refraction and dispersion of the several indicating colors on the valve stem indicating the operative or inoperative position of the valve. The lens is constructed of a unitary transparent body having an interior angulated, truncated surface of approximately 45.degree. to the horizontal, with an exterior angulated, truncated upper viewing surface of approximately 54.degree. to the vertical. The transparent lens body receives ambient colored light from the stem providing the maximum refraction of light onto the first interior angulated surface and directing the color to be indicated through the lens medium and onto the second exterior angulated truncated surface for maximum indicating area.