This design provides a level indicative of mainly steam and other corrosive liquids and gases. In a mica level gauge a mica package is mounted on either side of the medium, to see through it. Due to difference in transparency of the liquid, gas or vapor, the level can be read. These devices are mainly used at higher temperatures and pressures. In order to improve the visibility, there is a special lamp mounted at the rear in order to better read the level. Due to the special lighting, the light refraction / reflection in the liquid, gas or vapor separation surface better utilized. The mica packages are mounted in a robust stainless steel or mild steel column having cover flanges.