PIE gauge Magnetic Pie gauge,Magnetic Pie indicator(3pcs/set)Magnetic Pie gauge include three kinds of standrads.:1 #, 2 #, 3 #1 # indicator is the combination of eight triangular pieces, one side is brass surface, another side is eight lines saface.Hand the hands handle when using, keep brass upside, eight line saface downside, close to the workpiece surface, using the continuous method for magneticx inspection, it can clearly display the magnetic image display when spraying magnetic suspension.2 # indicator is the combination of eight triangular piece,both side are brass surface.hand the hands handle and keep arbitrary brass surface upside , close to the workpiece surface, using the continuous method for magneticx inspection, it can clearly display the magnetic image display when spraying magnetic suspension.3 # indicator is the combination of four triangular pieces, one side is brass surface, another side is four wire surface,and two round dots.hand the hands handle and keep arbitrary brass surface upside , close to the workpiece surface, using the continuous method for magneticx inspection, it can clearly display the magnetic image display when spraying magnetic suspension.It can check whether the flaw detection equipment, comprehensive use performance and operation method of magnetic suspension is appropriate.And can also adjust the distance between the cover and soft iron, found certain values of magnetic field, then observe the limit value.of near surface defects buried depth ability.