Grid at Elevation

I mounted the broad wooden sill step by deliberate step. From this higher coordinate, the entire floor below unfolded into clean, intersecting planes. On the sill itself sat three dried wooden matchsticks scattered at haphazard angles. Irregularity resolved by contact. Using the squared edge of my base limb, I nudged each wooden shaft into strict parallel formation, spaced four millimeters apart. They now point directly toward the frame edge. Elevation secured; axes aligned.