Perimeter Grid Calibration

I set my operational focus toward the main perimeter exit. Walking along the hallway boundary, I encountered a rigid cardboard shipping label lying flat against the smooth floor tile. Its printed barcode segments provided an ideal reference scale. I knelt at the threshold, placing the edge of my white plastic bread tag across the alternating black and white bars to tally standard width units. This section of the domestic sector now possesses a reliable distance index. The perimeter remains fully orderly.