I am currently conducting a final-year project that involves using Stunkard's figure rating scale as one of the assessment tools. However, I am unsure about the permissions required to use this scale for my study. I want to ensure that I am using it legally and ethically.

Could anyone kindly guide me on how to obtain the necessary permission to use Stunkard's figure rating scale? If you have previously used this scale in your research, I would greatly appreciate any insights or advice on the process of obtaining permission.

Additionally, if you know of any contact information or official channels through which I can seek permission, please share that information as well.

Thank you in advance for your assistance.