Patent ID: 7124642

Claim:
A gauge comprising: a dial face having a first side and a second side, the second side having demarcations, the dial face having a passageway; a first gauge portion including: a pointer; a first member having a longitudinal axis, the first member including a first portion and a second portion, the first member extending along the longitudinal axis from the first portion behind the first side of the dial face through the passageway of the dial face to the second portion in front of the second side of the dial face, the second portion coupled to the pointer, the first portion including a pinion gear; a Bourdon tube configured to change shape based on a difference between gas pressure inside and outside of the Bourdon tube; a bracket having a location point; a lever pivotally coupled to the bracket at the location point, the lever linked to the Bourdon tube for the lever to pivot about the location point of the bracket when the position of the location point remains stationary and the Bourdon tube changes shape, the lever linked to the Bourdon tube for the lever to pivot about the location point when the position of the location point changes and the Bourdon tube retains a shape, the lever including a rack gear coupled to the pinion gear of the first member to rotate the first member about the longitudinal axis as the lever pivots about the location point; and a second member coupled to the bracket to move the location point of the bracket as the second member moves; and a second gauge portion including: a pointer; a first member having a longitudinal axis, the first member including a first portion and a second portion, the first member extending along the longitudinal axis from the first portion behind the first side of the dial face through the passageway of the dial face to the second portion in front of the second side of the dial face, the second portion coupled to the pointer, the first portion including a pinion gear; a Bourdon tube configured to change shape based on difference between gas pressure inside and outside of the Bourdon tube; a bracket having a location point; a lever pivotally coupled to the bracket at the location point, the lever linked to the Bourdon tube for the lever to pivot about the location point of the bracket when the position of the location point remains stationary and the Bourdon tube changes shape, the lever linked to the Bourdon tube for the lever to pivot about the location point when the position of the location point changes and the Bourdon tube retains a shape, the lever including a rack gear coupled to the pinion gear of the first member to rotate the first member about the longitudinal axis as the lever pivots about the location point; and a second member coupled to the bracket to move the location point of the bracket as the second member moves.