Which method represents an object without distortion in all dimensions?

The method that accurately represents an object without distortion in all dimensions is multi-view drawing. This technique uses orthographic projections to show multiple views of an object, typically the front, top, and side views. Each view is drawn to scale and helps to convey the true dimensions and proportions of the object without introducing any perspective distortion.

Multi-view drawings are essential in engineering and design because they provide precise information that can be used for manufacturing and constructions, ensuring that every detail of the object is clear and accurately represented from various angles. This allows engineers and designers to convey specifications effectively to others involved in the project.

While the other methods, like oblique sketches, pictorial sketches, and perspective sketches, can convey an object's appearance, they may distort dimensions to create a more visually appealing or three-dimensional representation. For example, perspective sketches provide a realistic view that mimics human eyesight but can alter the relative dimensions of elements in the drawing. Hence, they do not maintain true proportions as multi-view drawings do.