2 # indicator is the combination of eight triangular piece,both side are brass surface. It can check whether the flaw detection equipment, comprehensive use performance and operation method of magnetic suspension is appropriate. Magnetic Field Indicator Pie Gauge For Ndt Mt Particle Inspection... PIE gauge Magnetic Pie gauge,Magnetic Pie indicator(3pcs/set) Magnetic Pie gauge include three kinds of standrads. And can also adjust the distance between the cover and soft iron, found certain values of magnetic field, then observe the limit value. Magnetic Particle Accessories & Consumables - Flux Magnaflux Particle Pie Meter Ndt Magneticparticle Testing Magnetic Field Indicator Pie Gauge Hfs-100 Spray Indicator of near surface defects buried depth ability. Festty Glasses Stap Spots 3 pcs, Eyeglasses Stap Holde fo Kids Women Men, Adjustable Sunglasses lanyad sting chain,eading eye glasses holdes aound neck, Eyewea etaine (Black 3 # indicator is the combination of four triangular pieces, one side is brass surface, another side is four wire surface,and two round dots.