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)Object: Library window head section
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.
Selected visible source evidence only; partial locator review, applies to depicted assembly.
Drawing notation: SECTION THRU LIBRARY WINDOW HEAD
Selected visible source evidence only; partial locator review, applies to depicted assembly.
Numeric value unresolved
Selected visible source evidence only; partial locator review, applies to depicted assembly.
Selected visible source evidence only; partial locator review, applies to depicted assembly.
36 in
Source-local witness only; no accepted geometry, installed quantity or governing issue. Vertical library-head witness between upper floor-zone line and lower head-zone line. Exact structural/finish endpoints unclassified; explicit unit marks.
Drawing notation: 3′-0″
Source-local witness only; no accepted geometry, installed quantity or governing issue. Vertical library-head witness between upper floor-zone line and lower head-zone line. Exact structural/finish endpoints unclassified; explicit unit marks.
173.75 unlabeled-number
Source-local witness only; no accepted geometry, installed quantity or governing issue. Printed decimal datum glyph only. No feet unit, datum conversion or accepted floor elevation supplied.
Drawing notation: STEEL 7TH FLOOR ELEV. 173.75
Source-local witness only; no accepted geometry, installed quantity or governing issue. Printed decimal datum glyph only. No feet unit, datum conversion or accepted floor elevation supplied.
Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.