A rough drawing that is drawn without a scale is commonly referred to as a sketch. Sketches serve as preliminary drawings that capture ideas or concepts quickly without the precise measurements that would be found in technical drawings.
These sketches can vary widely in their purpose and form, from artistic expressions to practical representations in fields like architecture or engineering. Unlike detailed plans, sketches allow for creative freedom, enabling the artist or drafter to explore concepts without the constraints of scale or accuracy.
In architectural contexts, for instance, a sketch may be used to convey broader ideas of design and layout before moving on to more formal drawings that adhere to scale and specific dimensions. Similarly, in product design, a quick sketch might help to visualize concepts that can later be developed into more intricate prototypes.
Overall, sketches are an essential part of the creative process, allowing for innovation and exploration, making them invaluable in many artistic and technical fields.