Abstract: The present invention provides a liquid level gage and an illuminator therefor. One embodiment of the liquid level gage includes a housing, a liquid column, an illuminator, and a power supply. The housing has a first or front end and a second or rear end. The liquid column includes a plurality of liquid column bodies connected to the front end of the housing. The liquid column also includes a first or front port assembly and a second or rear port assembly connected to each liquid column body. The liquid column is connected, either directly or indirectly, to a vessel. The illuminator includes a plurality of directed light source assemblies connected to the rear end of the housing. Half of the directed light source assemblies emit a first color light and half of the directed light source assemblies emit a second color light. A pair of bi-color directed light source assemblies (i.e.

Abstract: The present invention provides an apparatus for illuminating through sight devices. Sight devices include sight ports and sight flow indicators. One embodiment of an apparatus of the present invention includes a housing having a closed external configuration and an open central portion forming a frame-like structure. The housing generally forms a channel having at least one opening. The sight light further comprises a plurality of light sources secured within the channel of the housing. The light sources are spaced around the channel and directed so that the light sources will emit light through the opening in the channel toward the outside of the housing.