Use this palaeographic utility to apply a stated dating, script, abbreviation, codicological, metrological, layout, or condition rule consistently while preparing manuscripts for scholarly review.

Column 1

First column width in millimetres.

Column 2

Second column width in millimetres.

Gutter

Gutter between the columns in millimetres.

Block width

Full text-block width in millimetres.

Tolerance

Allowed mismatch in millimetres.

Check whether two measured columns plus their gutter reproduce the full text-block width within a stated default tolerance of one millimetre and report the signed discrepancy and the exact column-width ratio. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Discrepancy

Signed surplus or deficit against the block width.

Consistent

True when the parts fit the block within tolerance.

Width ratio

First column divided by second column.

• Script and manuscript evidence varies by language, region, institution, period, scribe, material, restoration, and cataloguing convention. A heuristic flag or score is not an authoritative date, hand attribution, reading, provenance, or conservation diagnosis.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Retain page images, scale, foliation, material, provenance, diplomatic transcription, uncertainty, and comparison exemplars; confirm conclusions with codicological context and specialist judgment.

• Watermark Twin Match Finder

  Compare measured chain-line and laid-line spacings of two sheets and declare a probable twin (same paper stock) when both signed deltas fall within the stated default tolerance of one millimetre.

• Manuscript Format Classifier

  Classify a codicological format from measured leaf height under the stated adjustable band convention (foliage of at least 280 mm is folio, 200-279 quarto, 130-199 octavo, below 130 small format) and report the exact width-to-height aspect ratio.

• Margin Proportion Rater

  Rate measured margins against the classic codicological rule of thumb (outer about twice the inner, bottom about twice the top) with exact ratios and a stated default tolerance of 0.25 on each ratio.