The ornamental design of a geometricalcolumnunit, as shown and described.
FIG. 1 is a top perspective view of a geometrical column unit showing my new design;
FIG. 2 is a front side elevational view thereof;
FIG. 3 is a rear side elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The new, original, and ornamental design of the geometrical column unit is contemplated to be a repeatable single segment capable of being stacked at the top and/or bottom surfaces to continue an unbroken/broken surface pattern of the right, left, front and back sides.