We need to use an on-screen tool for the validation of a piece of internally developed software (Visual Analog Scales) and would like to use your Screen Ruler tool. To this end we have to have a ruler program which itself is validated. Could you please tell us if you have ever validated the program and/or what we need to do to have documentation of its calibration? A validation certificate stating that you have followed an SDLC, based on your quality system rules would be great.
Dieter Wolfstaedter
Director EP Technical Services
Parexel International
Thank you very much for your interest in Screen Ruler. Please keep in mind that this tool is developed as a free-to-use, open-source application mostly by a single person. Therefore, I can't give any guarantees on software quality or updates.
Best regards,
Alex
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At this time, the Screen Ruler tool has not been formally validated under a documented Software Development Life Cycle (SDLC) aligned with regulated quality system standards. Therefore, we do not have a validation certificate or calibration documentation available.
While the tool is commonly used to measure online screen elements with precision, it has not been certified for use in regulated environments. If validation is required for your internal use, we recommend performing a risk-based validation in accordance with your organization’s quality system.
We can support this effort by providing version history, release notes, and basic technical specifications upon request.
Last edit: bewivob srea 2025-07-17
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Anonymous
Anonymous
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2025-08-21
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Dear Screenruler team,
We need to use an on-screen tool for the validation of a piece of internally developed software (Visual Analog Scales) and would like to use your Screen Ruler tool. To this end we have to have a ruler program which itself is validated. Could you please tell us if you have ever validated the program and/or what we need to do to have documentation of its calibration? A validation certificate stating that you have followed an SDLC, based on your quality system rules would be great.
Dieter Wolfstaedter
Director EP Technical Services
Parexel International
Hello,
Thank you very much for your interest in Screen Ruler. Please keep in mind that this tool is developed as a free-to-use, open-source application mostly by a single person. Therefore, I can't give any guarantees on software quality or updates.
Best regards,
Alex
At this time, the Screen Ruler tool has not been formally validated under a documented Software Development Life Cycle (SDLC) aligned with regulated quality system standards. Therefore, we do not have a validation certificate or calibration documentation available.
While the tool is commonly used to measure online screen elements with precision, it has not been certified for use in regulated environments. If validation is required for your internal use, we recommend performing a risk-based validation in accordance with your organization’s quality system.
We can support this effort by providing version history, release notes, and basic technical specifications upon request.
Last edit: bewivob srea 2025-07-17