1. Search in the library literature to find researchers who have developed a tool on your topic. Sometimes, the tool will be included in appendices of an article.
2. Use the references of articles that mention the tool to trace back to the original document that describes the tool.
3. Add terms such as tools, questionnaires, or surveys to your search in the databases. See example below:
"smoking cessation" AND tools
4. Look to see if the database you are using has a filter for publication type, and select items such as surveys, questionnaires, etc., like in the example below from CINAHL.

The Health and Psychological Instruments (HaPI) database allows you to search your topic, and the database will pull up names of different measurement tools. However, you won't get the actual tool. Instead, you are directed to articles that use or describe the tool. You can then work on finding access to the tool.
Tip! Even if you find a free tool or a tool is provided in an article, you may need to get permission to use it. Read websites carefully for permissions needed. With the scholarly literature, be sure to contact the author(s) for a copy of the tool and permission to use. Make sure to keep a record of these interactions.