Pressure gauge is the gauges used to monitor the pressure being exerted by a certain operation. There have been developments in enhancing the functions of pressure gauges in terms of measuring the increase or decrease in pressure level. Pressure gauge has two classifications, the straight reading and the indirect reading. For the direct reading gauges, particle flux that by the way touches the surface produces some form of pressure and the level of this force employed on the exterior is calculated. For the indirect reading gauges, the pressure outcomes when a certain gas property is changed by the gas density in the usual manner. · There are two types of pressure gauges that are most usually used. These are the traditional or regular and the filled gauges. · The traditional or regular gauges are horizontal to the onset of the usual causes of gauge failure, which are water condens...