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Building's condition <br />43 <br />Hand-made sketches on gridded paper <br />Photogrametry <br />Making hand-sketches can be challenging for people who aren’t used to <br />drawing, which is why using gridded paper can be a big help. It’s important <br />to try to draw your sketches to scale — take quick measurements and <br />assign a real-world value to each square. For example, each square could <br />represent one foot. If you’re using a tablet, look for digital sketching tools to <br />make it easier. <br />Besides digital sketching <br />tools (such as Goodnotes, <br />Freeform, Fresco, or <br />Procreate), there are <br />also photogrammetry <br />apps like Polycam that <br />can make this task even <br />easier. These apps allow <br />you to take multiple <br />photos of a building and <br />automatically create a <br />3D model from them <br />— a model that you can <br />later navigate to view <br />shapes, dimensions, and <br />details more closely and <br />accurately, and even get <br />floor plans and internal <br />elevations.