Magnetic Field Indicator D 250

The magnetic field indicator type D 250 is designed in accordance with the following specification methods of non destructive testing :
MIL-STD-271 E, § 4.3.2.5.5, figure 8
NAVSHIPS 250-1500-1, § 12.4.1.5, figure 12 – 17
ASME, section V, Art. 25, SA-275, figure 8
The sample is used for localization of magnetic fields and their directions during performance of magnetic particle testing.