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: Courtroom fan control diagram
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.
Power/control panelP2 beside fan relay stack.
Drawing notation: PANEL P2
Power/control panelP2 beside fan relay stack.
Printed control-air-line role; no sizes inferred.
Drawing notation: AIR LINES FOR VALVE AND DAMPER CONTROL
Printed control-air-line role; no sizes inferred.
Printed fan relay operation note; abbreviation preserved.
Drawing notation: THESE RELAYS TO CLOSE WHEN CONT′R CLOSES AND OPEN WHEN CONT′R OPENS
Printed fan relay operation note; abbreviation preserved.
Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.