The ornamental design of a geometricalcolumnunit, as shown and described.
FIG. 1 is a top perspective of a geometrical column unit, showing my new design;
FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image thereof;
FIG. 3 is a right side elevational view thereof, the left side elevational view being a mirror image thereof; and,
FIG. 4 is a top view thereof, the bottom view being a mirror image thereof.
The broken line portion of the figure drawings is included to show portions of the article that forms no part of the claimed design.
The new, original, and ornamental design of 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.