provisional W3 trace X at normalized v=0.590
20.18220.182266 ft · estimated uncertainty ±2 ft
Approximate source u=0.536; reused provisional W3 homography, not a printed dimension or classified face.
Drawing notation: BAY Y · BAY X · BAY W · BAY V · BAY U · BAY T · BAY S · BAY R · BAY Q
Conditional axis hypothesis; not a classified wall, pier, opening or finish boundary.