Measurements of the radius of curvature (ROC) are helpful in many fields of research and technology, including optics, mechanical designs, bio-microscopy, telescopes, and industrial manufacturing. ROC is an important parameter that directly affects a lot of aspects of imaging and manufacturing. Curved surfaces such as lenses, mirrors, and other components require high-precision measurements to ensure the quality meets up with their application. The concepts, procedures, and uses of the radius of curvature measuring method are all covered in detail in this article. The suggested method offers a dependable and effective means of determining the radius of curvature. The experiment is constructed utilizing simple equipment, compact design, low-cost and straightforward processing techniques. The measured results performed with a curved mirror with a radius of 1.8 m yield a relative error of 0.01%. This is a promising approach for applications for curved surface characterization as well as the integration in several optical systems.