Site plan view 1 at 3/32"=1'-0" (view title); enlarged plans 2 and 3 at 1/4"=1'-0" (18 pt/ft) -- measurements on them carry their own scale. Lettering is drawn as outlines; devices identified by looking at the page image.
Names come from: no legend on this sheet, so NECA 100-2006 is what a name rests on. It is the baseline for what a symbol MEANS, never for matching shapes — proportions differ per firm. Confirming a name here is a correction, and corrections are what build the firm's file.
Scale is 3/32"=1'-0" — 6.75 points per foot. Read off the title block, so measurement off this sheet is available. A later correction flags any measurement taken under the old scale as stale rather than silently recomputing it.
The reader found 12 marks on this sheet. 12 stand now 4 struck. The reader’s own number is kept as it was written: it is what the accuracy history is scored against, and it does not move because somebody corrected the sheet.