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⚠This image does not contain a manuscript page; it is a technical calibration photograph of a color card and ruler used in a digitization studio.
A standard 24-patch color calibration card (ColorChecker) used for digital imaging, set within a foam-lined cutout. To the right is a stainless steel ruler measuring up to 19 centimeters.
Use ← → arrow keys to navigateSwipe left/right to navigate·Produced by SourceLibrary.org in Amsterdam, 2026