Disclaimer
Last updated: September 14, 2026 • Please review before using tools on penggarisonline.com
1. Educational & Everyday Utility Purpose
The on-screen measurement instruments on Penggaris Online HP CM (penggarisonline.com) are provided solely for general educational, crafting, student learning, and everyday convenience estimation when a physical ruler is unavailable.
2. Measurement Accuracy & Physical Calibration Variance
Although this online ruler is built with high-precision scaling algorithms and standard ISO/IEC 7810 ID-1 card calibration (e.g. credit/ATM cards or national IDs) for sub-millimeter precision, true on-screen accuracy remains subject to external technical factors:
- Browser Zoom Scaling: Your browser zoom must be set to precisely 100%. Operating system scaling factors (e.g. 125% or 150% DPI on Windows/macOS) alter the physical pixel density unless accounted for via our calibration tool.
- Screen Protectors & Protective Cases: Thick tempered glass screen protectors or raised phone bumper cases may introduce optical parallax refraction when aligning objects from an off-perpendicular angle.
- Curved / Waterfall Screen Edges: Smartphones featuring curved edge displays may exhibit slight non-linear distortion along the extreme outer borders.
💡 Recommendation: Always perform on-screen calibration with a standard physical payment card before conducting critical measurements.
3. Legal Metrology & Professional Exclusion
Penggaris Online HP CM is NOT a certified metrological instrument approved by legal trade standards organizations or government metrology bureaus. It must NOT be utilized as a governing standard for:
- Commercial trade transactions requiring legally certified weights and measures.
- Surgical, orthopedic, biomedical, or pharmaceutical clinical applications.
- Aeronautics, aerospace engineering, civil structural stress testing, or hazardous high-voltage clearances.
4. Advertising & Sponsored Content Disclaimer
This website serves advertisements dynamically populated by Google AdSense and accredited third-party ad networks. The appearance of advertisements, commercial banners, or sponsored links does NOT constitute an endorsement, guarantee, representation, or recommendation by penggarisonline.com of any advertised products, services, or claims.
Any business transactions, correspondence, or purchases conducted with third-party advertisers are strictly between you and the respective vendor. We disclaim any liability for damages or losses resulting from engagements with third-party advertisers.
5. External Hyperlinks Disclaimer
Our website may contain hyperlinks to external resources for user reference (e.g. ISO standards or browser vendor support guides). We do not author, monitor, or guarantee the ongoing accuracy of external content hosted on third-party domains.
6. Limitation of Liability
To the fullest extent permitted by applicable law, the operators, developers, and affiliates of penggarisonline.com shall not be held liable for any direct, indirect, incidental, special, or consequential damages (including, without limitation, material cutting errors, economic loss, structural discrepancies, or project delays) arising out of the use or inability to use this digital measurement tool.
7. Contact & Inquiries
If you have questions regarding this disclaimer or require technical clarification regarding our on-screen pixel calibration methodology, please contact: