What tool is used to convert small scale representations to large measurements?

The tool that is specifically designed to convert small-scale representations, like drawings or blueprints, into larger measurements is the scale rule. A scale rule features various scales (such as 1:10, 1:50, etc.) marked on it, allowing users to accurately interpret scaled designs and apply the correct measurements to a physical space or object.

This tool is essential in fields like architecture, engineering, and stagecraft, where precise scaling is necessary for translating designs into actual structures or setups. Its design enables easy reading of dimensions directly from a plan without requiring complex calculations. In contrast, while a level, ruler, and measuring tape are useful tools for measuring, aligning, and marking measurements in various contexts, they do not inherently serve the specific function of scaling representations correctly.