Terms of Service

Last updated: October 31, 2026

Measurement Accuracy & Intended Use Disclaimer

AI Online Ruler (aionlineruler.com) is engineered for fast everyday physical measurements, digital crafting, screen scaling, and general estimation. For critical industrial engineering, certified metrology, aerospace manufacturing, or medical operations, always verify dimensions using ISO-certified physical micrometers, Vernier calipers, or laboratory gauge blocks.

1. Acceptance of Terms

By accessing and using AI Online Ruler, you acknowledge that you have read, understood, and agreed to be bound by these Terms of Service. If you do not agree, please discontinue using this website.

2. Free License & Permitted Use

We grant you a non-exclusive, worldwide, royalty-free license to use the measurement tools, digital caliper, guidelines, and conversion utilities available on AI Online Ruler for personal, educational, commercial drafting, and professional measurement tasks directly in modern web browsers.

3. Screen Calibration Responsibility

Physical measurement accuracy relies on the geometric calibration of your display's pixel density (PPI). The user acknowledges that factors such as OS zoom settings, browser zoom (which should remain at 100%), non-standard display scaling, or hardware anomalies may introduce minor variances unless calibrated using the built-in ISO 7810 card or diagonal screen preset modes.

4. Intellectual Property

All source code, design systems, vector assets, algorithms, documentation, and trademarks associated with AI Online Ruler are the proprietary property of AI Online Ruler and protected by applicable copyright and international intellectual property laws.

5. Limitation of Liability

The service is provided on an "AS IS" and "AS AVAILABLE" basis without warranties of any kind. Under no circumstances shall AI Online Ruler, its developers, or affiliates be liable for any direct, indirect, incidental, or consequential damages resulting from the use or inability to use the measurement utilities.

6. Contact Details

For inquiries or questions regarding our terms, please reach out to:

[email protected]