To provide a pressure gauge which is highly reliable, inexpensive, and is also easy in manufacture.

The pressure gauge, equipped with a body having a recessed part on its one end side and a projection part touching a measuring fluid on the other side, a sensor chamber lid fixed to this main body, to constitute a sensor chamber together with the recessed part, and a nipple whose one end is fixed to the body, while keeping a gap between the nipple and the projection part, is equipped with a first welded part which fixes the body and the sensor chamber lid by welding with its tip part reaching the plane part of a wall surface of the sensor chamber, and a second welded part which fixes the body and the nipple, by welding with its tip part reaching the plane part of a wall surface of the gap.

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