Methods and apparatus are described for a two-axis tracking mechanism for a concentrated photovoltaic system. Two or more components forming the support structure of the two-axis tracker mechanism, which are assembled in the field and manufactured to allow one or more lasers to align the support structure of the two-axis tracker mechanism in three dimensions, vertical (X) dimension, horizontal (Y) dimension, and diagonal (Z) dimension, at a site where the concentrated photovoltaic system is to be installed. Adjustable leveling mechanisms are built into the two or more components forming the support structure.