Pressure gauge device featuring setting for automatic supply and termination of pressure

A pressure gauge device featuring setting for automatic supply and termination of pressure, comprising:

• a pressure gauge, which comprises a hand sweep zone formed on a surface thereof, the hand sweep zone comprising an indication hand arranged thereon, the indication hand being electrically conductive, the pressure gauge comprising a resetting conductive piece, the resetting conductive piece being electrically conductive and having an end on which a resetting constraint peg is formed and an opposite end forming a resetting conduction terminal, the resetting constraint peg being arranged in the hand sweep zone and located on a rotation path of the indication hand;
• a rotary knob, which is fit outside an outer circumference of the hand sweep zone of the pressure gauge, the rotary knob comprising a hollowed portion formed therein, the hollowed portion corresponding to the hand sweep zone, the rotary knob comprising a coupling section extending from a lower edge of the hollowed portion;
• a rotary knob conductive piece, which is fit over and coupled to the coupling section of the rotary knob;
• and
• a rotary knob indicator, which is mounted to the rotary knob, the rotary knob indicator being electrically conductive and having an end forming a rotary knob engagement terminal and an opposite end forming a rotary knob conduction terminal, the rotary knob engagement terminal being arranged in the hand sweep zone and located on the rotation path of the indication hand, the rotary knob conduction terminal being in contact engagement with the rotary knob conductive piece.