What is the relationship between vacuum pressure gauge readings and absolute pressure?

Vacuum pressure gauge to the atmospheric pressure as a benchmark to measure instrument is less than the atmospheric pressure. Applicable measurement not explode, crystallize, solidify or on copper and copper alloy non-corrosive effect of liquid, gas, vacuum pressure measurement. Today we talk about relationship between absolute pressure and vacuum pressure gauge reading. Points out gas pressure on general pressure gauge, not represent the actual pressure of the gas, for beyond the pressure value of the atmosphere, the atmospheric pressure that is not taken into account, the gauge pressure is zero since the atmospheric pressure, also called indicated pressure or gauge pressure. Gauge pressure and atmospheric pressure is the absolute pressure, calculated it with absolute vacuum is zero. When the gas pressure is lower than the atmospheric pressure inside the sealed container, namely vacuum, also known as negative pressure. Usually use 760 millimeters of mercury ( At 0 degrees) As a standard scale. According to the above results, can be said with mathematical absolute pressure and the relationship between the vacuum meter reading: absolute pressure = atmospheric pressure + vacuum meter readings