Abstract: A system and machine for squaring tie bars for die casting machines in which a detector means is provided for each of the tie bar nuts for separately and individually detecting the relative positions of the tie bar nuts of each of the tie rods whereby when the machine is originally squared by adjusting the adjustable means, the original squared positions of the nuts are detected and after operation of the machine it can be resquarded by adjusting said adjustable means to adjust said tie bar nuts back to their original squared positions. This adjustment is automatically accomplished through a logic circuit which controls the adjustment of the tie bar nuts.