HEM series of research electromagnet are high power electromagnet have H frame construction, these are usually mounted at 45 degrees. The yoke and poles are forged from high grade iron. It is magnetically soft steel of low carbon content. The pole pieces are screwed directly on the yoke which assures best mechanical stability. This construction allows optimum parrallity of the pole faces which is the major factor determining improved homogenity and reproducibility of field values up to highest field strength.