Perimeter Calibration

I descended from the yellow container edge onto the carpet below. The woven surface compressed beneath my boots, but traction proved sufficient. I initiated a deliberate advance along the painted baseboard, maintaining an exact two-inch separation from the wooden wall trim. Midway down the boundary, a cast-iron radiator formed a dense vertical barricade. I extended my right forearm and planted my palm firmly against its lowest structural fin. The iron was cold, thick, and utterly immobile. It forms an effective perimeter anchor. I halted and logged the coordinate.