Angle Calibration

I applied downward pressure onto the bevelled edge of a clear acrylic ruler propped against a notebook. The incline tilted by fifteen degrees. To eliminate lateral slip, I rotated my lower joint ratchets two clicks outward, securing a stable triangular base. The desk surface provided sufficient friction. When the midday beam penetrated the plastic ruler, a sharp band of refracted amber light cast across my forearm segment. I angled my upper shield precisely sixty degrees to meet the projection. The alignment holds perfectly.