vent_nominal_diameter
2″ V2 in
Original room719 service bundle, no fixture specification or installed identity.
Drawing notation: 2″ V
Original room719 service bundle, no fixture specification or installed identity.
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. Partial timed visual review: OCR/catalogue/existing reports searched before one sequential small JPEG65 locator. Actual clockwise reading rotation 0 degrees. Regions are normalized raw access-image coordinates before rotation. Partial, not fully extracted. Partial timed visual review: Source-local targeted detail evidence only; no exact room geometry, installed quantity, full-sheet completeness or accepted model change. Partial timed visual review: Source-local printed service callout or depicted fixture only; no whole-floor completeness, installed quantity or accepted architectural geometry. Partial timed visual review: Additive source-local extraction and exact canonical text crosswalk; zero fresh visual calls for images without inspection receipts. Full-page crosswalk rectangle is an index locator, not inspected-area or completeness evidence. Partial timed visual review: undefined Partial timed visual review: undefined Partial timed visual review: Additive source-local note review; no accepted geometry or physical identity merge. Partial timed visual review: undefined Partial timed visual review: Existing normalized master crop provenance reused from service-symbols20261013c; no row or symbol recount. Partial timed visual review: Existing core crop inspected; prior drinking-fountain and branch-size evidence reused. No new property or coverage claim. Partial timed visual review: Additive service evidence only. Raw master coordinates, EXIF ignored, used for new measurements. Text-only images retain prior source orientation; no new visual coverage. Drawn symbol counts do not establish installed quantities or lighting fixture types.
Highlighted reading: 2″ V. Original room719 service bundle, no fixture specification or installed identity.
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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.
2 in
Original room719 service bundle, no fixture specification or installed identity.
Drawing notation: 2″ V
Original room719 service bundle, no fixture specification or installed identity.