Drawings

Set the scale

Nothing you draw on a sheet measures correctly until that sheet has a scale. Estimator+ doesn't assume a scale from the PDF — you set it once per sheet, by calibrating against something you already know the real-world length of.

Calibrating a sheet

The plan card at the top of the canvas shows a Set scale chip alongside the plan's name and revision. Click it to start a two-point calibration:

Click one end of a known distance on the drawing — a dimension line, a gridline spacing, anything with a printed length.
Click the other end.
Type in the real-world length that distance represents.

Estimator+ works out the scale from those two points and applies it to the whole sheet. Every area, length, and count you draw on that sheet from then on converts through this scale automatically.

Reading the chip

Once a sheet is scaled, the chip stops reading "Set scale" and shows the ratio instead — for example 1:100. That's your at-a-glance confirmation that the sheet is ready to measure. An unscaled sheet still lets you draw shapes, but the quantities they produce won't be trustworthy until you go back and calibrate it.

Recalibrating

Click the chip again on an already-scaled sheet and it offers to recalibrate. Confirming clears the existing scale and drops you straight back into the two-point pick, so you can redo it against a better reference if the first calibration was off. Recalibrating recomputes every measurement already drawn on that sheet against the new scale — it doesn't just affect what you draw next.