Final answer:
A scale ruler or grid is used to create scale drawings, allowing representation of larger objects with proportionally smaller measurements. A scale factor determines the degree of scaling, and foreshortening adds depth to the representation of objects.
Step-by-step explanation:
The tool that can be used to draw an object so that it is smaller or larger than it really is, is a scale ruler or a grid, which can be used in creating a scale drawing. Scale drawings allow specific small units of measure to represent larger units of measure, by applying a scale factor. For instance, a scale factor of 1/200 means that each unit in the drawing represents 200 units in the real world.
Additionally, the technique of foreshortening can be employed to create an appearance of depth, making an object seem to extend into space. This technique exaggerates the parts of an object that are closer to the viewer to give a sense of perspective in the drawing.