Pressure gauge and bottle provided with such a pressure gauge

摘要

The gauge has a body (1) provided with a fastener surface (11) that is intended to cooperate with a support for the pressure gauge. A helicoid manometric tube (2) is partly placed in the body, where the tube includes an open upstream end (23) that communicates with an outer side of the body. A face of glazed translucent window (3) located in front of a needle includes an axis (31) for positioning the manometric tube. The positioning axis is placed in a center end of a helicoid portion (26) of the tube that emerges in a reading zone (4).