Abstract: A Bourdon tube pressure gauge has a movement amplifying mechanism comprising a pinion of segment shaped permanent bar magnets extending radially and terminating at a circular edge magnetically driven by a pivotally mounted rack segment having an arcuate band of permanent bar magnets arranged in parallel alignment with polar axes extending radially of the rack and transversely of the band. One of the poles of each of the magnets of the band is located along a driving arcuate edge thereof which faces and magnetically drives the circular edge of the pinion by magnetic attraction of opposite poles. The polarity of adjacent magnets on both the pinion and rack segment is reversed providing alternate N and S poles around the pinion circular edge and along the driving edge of the band, respectively. In one form of movement, the rack segment is formed with an opening and the driving arcuate edge faces the opening in which the pinion is positioned for operative magnetic engagement between the band and pinion.