How do non-isometric lines visually differ from isometric lines?

Non-isometric lines visually differ from isometric lines by creating an illusion of length. In isometric drawings, the angles and ratios are maintained such that the measurements along the axes remain consistent, making them appear uniform without any distortion in scale. Non-isometric lines, on the other hand, are drawn at angles that do not conform to the isometric system. This leads to a perception of depth and dimension that can alter how we interpret lengths and distances within the drawing, giving them a unique visual quality.

This distinction is critical in architectural and engineering drawings, where accurately conveying three-dimensional structures in two dimensions is essential for clarity and understanding. Non-isometric lines can be used to suggest curves, changes in orientation, and other features that contribute significantly to the visual representation without conforming to standard scaling.