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Using a scale ruler is particularly advantageous when reviewing architectural drawings because it allows for precise measurements proportional to the scaled dimensions represented in the drawings. Architectural plans are often created to a specific scale, such as 1/4" = 1', meaning that every quarter inch on the drawing corresponds to one foot in reality. A scale ruler is specifically designed to facilitate this process, enabling users to accurately interpret the sizes and distances within the drawings without needing to convert measurements manually.

In contrast, while other tools like a pencil and eraser can be useful for making notes or adjustments, they do not provide the same accuracy for measuring distances. A measuring tape is typically used in physical spaces rather than determining dimensions on printed or digital plans, and a level is essential for ensuring horizontal or vertical alignment on construction sites but does not serve the purpose of measuring and interpreting scaled dimensions on architectural drawings. Therefore, the scale ruler stands out as the most effective tool in this context.