mercury is utilized in thermometers, gauges, manometers, sphygmomanometers, float valves, mercury switches, mercury transfers, fluorescent lights and different gadgets. utilized in pressure estimating gadgets, mercury is utilized on the grounds that its high thickness requires less space. It is likewise a decent channel of power, so it is a valuable part of electrical switches. Mercury is additionally utilized in dental fillings, paints, cleansers, batteries, and fluorescent lighting.