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: First-floor lookout observation slot unit
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.
0.375 in
Depicted source-local component only; no installed quantity, room geometry or world placement inferred.
Drawing notation: 3/8" WIDE
Depicted source-local component only; no installed quantity, room geometry or world placement inferred.
12 in
Depicted source-local component only; no installed quantity, room geometry or world placement inferred.
Drawing notation: 1'-0" LONG
Depicted source-local component only; no installed quantity, room geometry or world placement inferred.
Depicted source-local component only; no installed quantity, room geometry or world placement inferred.
Drawing notation: OBS. UNIT: 3/16" THICK MADE IN ONE PIECE & SECURED AT EACH END TO METAL FLATS
Depicted source-local component only; no installed quantity, room geometry or world placement inferred.
0.1875 in
Depicted source-local component only; no installed quantity, room geometry or world placement inferred.
Drawing notation: 3/16" THICK
Depicted source-local component only; no installed quantity, room geometry or world placement inferred.
Printed note applies to slot-opening frames only; hardware designation, glass thickness and quantity unspecified.
Drawing notation: HINGED FRAMES WITH GLASS PANELS TO BE USED AT ALL SLOT OPENINGS
Printed note applies to slot-opening frames only; hardware designation, glass thickness and quantity unspecified.
0.5 in
Printed diameter of rods in typical gallery plan; not an installed rod count or spacing.
Drawing notation: 1/2" ⌀ HORIZONTAL RODS
Printed diameter of rods in typical gallery plan; not an installed rod count or spacing.
Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.