What you get
Inputs, takeoff, assumptions and the drawings reviewed, in one workbook.
Every dimension taken from a drawing sits in an inputs block with its sheet and note quoted, and the takeoff lines are formulas on those inputs. Each line carries the item, the location as a station range or structure, the basis of the quantity and the source, in the same order as your bid form or proposal sections.
An assumptions sheet lists every question the drawings left open and what it does to the quantity, ready to send as RFIs. A drawings-reviewed sheet records what was in the package, what governs and what is superseded, which is how a stale concept sketch gets caught before it is priced.