The tool used to determine new dimensions when scaling a photograph is called a __________________.

The term for the tool used to determine new dimensions when scaling a photograph is the proportion wheel. This tool is specifically designed to help in maintaining the correct proportions when resizing images. It allows users to set the original dimensions of a photograph and then easily calculate the new dimensions based on the desired scale, ensuring that the image does not become distorted during the resizing process.

Using a proportion wheel is beneficial in a variety of visual communication projects where precise scaling is crucial, such as in photography, graphic design, and print media. It allows designers to easily visualize the relationship between the original size and the new size they wish to achieve. This tool stands out because it directly addresses the need for proportionality in scaling, which is essential for maintaining the integrity of the image’s visual representation.