Abstract: An alignment gauge used to align the concave broadface copper in a continuous casting mold with a reference point below the mold such as the first and second rolls in the zero segment. The gauge includes a pair of support members with a first side and a second side. The first side of the support members has a curved edge that matches the concave curved wall of the broadface copper. The first side also has a pair of probes for detecting the position of the first and second rolls in the zero segment. Information regarding the alignment of the concave broadface copper with the first and second rolls in the zero segment is provided to a display in electrical communication with the probe.