Unfortunately, it is not possible to display within an iframe at this time. There is a header to our HTTP requests which states that iframes will only function if the content of the iframe is from the same origin as the parent page. We did this to prevent a type of attack called clickjacking where a page not owned by BrightGauge embeds us and then has control over the input/interactivity happening within that frame.
However, you can create public dashboards. Please refer to Public Dashboards for more information.