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Trim and corner-squareness test

Use the supplied trim guides to compare opposing edges and diagonals. This checks the result of cutting a rectangle rather than front/back printer registration.

US Letter · 1 PDF page · Print PDF

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Trim and corner-squareness test / LETTER

A good fit for your idea?

This paper diagnostic is a working check, not a certified measurement standard.

Use one line convention

Cut consistently relative to the printed line; switching between its inside and outside changes the result. Check both opposing edge pairs and both diagonals. Record measured differences instead of marking a page “square” merely because it looks close.

Printing, file details and help

About this file

A printing diagnostic, not a certified measuring instrument.

From file to finished page

  1. Choose the paper size loaded in your printer and open the matching PDF.
  2. Print at actual size when dimensions matter. Check a known dimension; this edition has no labeled scale-reference line.
  3. Use the corner and edge guides to trim the 140 × 150 mm rectangle. Keep the line convention consistent instead of cutting inside on one side and outside on the other.
  4. Measure both opposing edge pairs and both diagonals. The geometric diagonal is approximately 205.18 mm.
  5. Unequal diagonals after equal opposing edges can indicate a skewed cut. This paper check is not a certified measuring tool.
Printing and use notes

Make one trial on ordinary paper before using special stock or preparing a batch. No physical test result is claimed.

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Trim and corner-squareness test (2 files)

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Trim and corner-squareness test

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