Boundary vertex 2 · north
54.6 ft (trace)54.6 ft · estimated uncertainty ±5 ft
Drawing notation: 437
Trace/label region on temporary 180-degree upright view; stored files remain upside down.
Calculated from: f4-room-437-footprint-trace
Every dimension belongs to an object and a drawing. Original room numbers, object marks, printed values and source regions stay together—even when the answer is unresolved.
464 of 464 photographs have extraction records, containing 27,517 properties. Initial image review is not exhaustive extraction: 0 photographs have passed the full-region check. 66 numbered sheets are reconciled. Modeling and architectural registration are separate work; these counts do not establish a complete building.
Download the structured register (JSON)Original sheet identity has not yet been reconciled.
Extraction: Reviewed · extraction partial. IMG_1335 is heating and lighting; it cannot certify architectural partition approval. Fourth-floor provisional MEP-underlay trace reused only as a parent of the analytical registration curtain. Partial timed visual review: 2026-10-11 remaining-region review. Prior queue, OCR and packages reused; ten sequential inspections total, confined to IMG_1329/1334/1336/1337. Normalized regions in unrotated complete-upright WebP. Research only; no accepted geometry or complete extraction. Partial timed visual review: OCR review only this pass; no previous package located for IMG_1335. Orientation and all fine regions require visual review. Partial timed visual review: Additive source-local review; normalized coordinates in unrotated 2200×1650 access WebP. Reuse previous verified records; no accepted geometry or complete extraction. Partial timed visual review: Additive source-local lighting review; source regions normalized in unrotated access-image coordinates. Printed numbers are preserved separately from fixture types. No world coordinates, complete extraction or installed acceptance. Partial timed visual review: undefined Partial timed visual review: New readings use raw 4032x3024 master-image coordinates, ignoring EXIF. Regional identities are modern extraction IDs, not historical identifiers. No accepted installed transforms or building geometry. Partial timed visual review: undefined Partial timed visual review: undefined
Highlighted reading: 54.6 ft (trace). Trace/label region on temporary 180-degree upright view; stored files remain upside down.
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Registration: provisional · 3 independent checks · maximum residual 1.632 ft.
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Scroll or pinch to inspect this drawing. The gold outline locates the selected reading. Archival drawing photograph · Oregon Historical Society research collections.
Open source image separately ↗Printed values, calculations, image traces and observed counts are different kinds of evidence. “Verified” applies to the specific reading—not to the whole room or model.
54.6 ft · estimated uncertainty ±5 ft
Drawing notation: 437
Trace/label region on temporary 180-degree upright view; stored files remain upside down.
Calculated from: f4-room-437-footprint-trace