This type of standard electromagnet is used in many experiments. 'U' shaped soft iron yoke. The soft iron is of a special quality, structurally uniform, well machined and nished to meet the rigid standards. The pole pieces are made from dead annealed soft iron blocks of the best quality available. They are well shaped, machined and nished. The air-gap is continuously variable with two way knobbed wheel screw adjusting system. EMU-50T is supplied with tapered pole pieces.