Calibrating the Drawing Scale in Takeoff

To calibrate the scale for a drawing in Buildend:

1. Navigate to Takeoff
   • Open the project where you want to calibrate the drawing scale.
   • In the project tabs, click Preconstruction → Takeoff.
2. Select the Drawing
   • From the Drawings dropdown, select the drawing you want to calibrate.
   • If the scale has not yet been set, you will see a red button labeled Scale Not Set.
3. Open the Calibration Tool
   • Click the Scale Not Set button to open calibration options.
   • You will have two methods to set the scale:
   • Option 1: Manually Set Scale
     • Enter the scale ratio manually (e.g., 1 inch = 10 feet ).
   • Option 2: Scale by Measurement
     • Click once to start drawing a line between two known points.
     • Click again to finish the line.
     • Enter the actual real-world distance between the two points.
4. Choose Units & Precision
   • Select whether to calibrate in feet or meters.
   • Choose the desired precision (number of decimal places).
5. Save Calibration
   • Click Submit to save the calibration.
   • All measurements on this drawing will now use the calibrated scale.

Tips for Choosing a Calibration Method

• Manual Scale – Use this option if the drawing already includes a clear, printed scale (e.g., “1" = 10'”) and you trust that the drawing has not been resized or distorted.
• Scale by Measurement – Recommended if you are unsure whether the printed scale is accurate or if the drawing may have been rescaled during scanning. Choose two points with a known distance (e.g., a door width, grid line spacing, or dimensioned wall) for the most accurate calibration.