Methods of magnetising steel strip in continuous production lines have been developed so that magnetisation can be accomplished without enwrapping strip with conductors. Magnetisation can be achieved both in line with the strip rolling direction and across the strip width at 90° to the rolling direction. Appropriate sensing systems have been developed so that magnetic parameters such as loss and permeability can be measured at 0° and 90° to the rolling direction, without enwrapping the strip with sensing conductors.