Contact RefManual
Email: contact@refmanual.com
Use this address for content corrections, website problems, source or image attribution enquiries, and general questions about RefManual.
The email links open your email application. No message is submitted by this page; review your message before sending.
Report a reference error
Include the details needed to locate and check the issue:
- The full page URL and section, row, product code or parameter.
- The current value or statement, including its units and conditions.
- Your proposed correction and a source URL, title, edition and page or table if available.
- For a diagram or photograph, the model shown and the mismatch you noticed.
You can still report an issue without a replacement source; describe the uncertainty clearly.
Report a calculator or website problem
Include the page, browser or device, the steps to reproduce the problem, expected result and displayed result. For calculations, include units and a non-confidential example of the inputs.
Some tools keep inputs in the result link. Check the link and screenshots before sending; remove confidential drawings, customer details, proprietary process data and other information you do not wish to share.
Sources, images and attribution
For an attribution or permission concern, identify the affected page and the original work, and explain the correction requested. Source links and product examples do not transfer third-party reuse rights or establish manufacturer endorsement.
Use the original source and its terms when reusing manufacturer images, drawings or tables. RefManual does not grant permission on behalf of those publishers.
General enquiries and topic suggestions
Describe the engineering question you want to answer and the existing page, designation or source involved. Suggestions are considered within the site's current reference scope; submitting a request does not promise new coverage.
RefManual does not provide order processing, stock confirmation or product certification. For an order or a specific product's approved operating limits, contact its manufacturer or supplier.
What happens next
A correction needs to be checked against its source and conditions before it changes a reference. We do not promise a fixed response time or immediate publication of a suggested change.
See Sources and method for the content process, About RefManual for the site's scope, and the privacy policy for data-handling information.