Printable Calibration Check Page
This single-page Letter PDF is for anyone who needs to confirm that a printed ruler or other size-based printable is coming out at the right scale. It contains a calibration check box and a clear print-at-100% note. The box height is designed to match the short side of a bank card, measuring 53.98 mm or 2.125 in.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 51 KB
Free for personal, family and classroom use.
Print the page without resizing, then compare the box height to a bank card. If the heights match, your printer is set correctly. If they do not, adjust the print scale and print again until the measurement lines up.
Good for
- Check printer scale before printing rulers
- Verify 100% print settings
- Test page size on Letter paper
Tip: Turn off any fit-to-page, shrink, or fill options before printing.
3 files · PDF, XLSX
Get every sheet: Real-Size Ruler Printables
This sheet plus 2 more in one download, with the editable Excel files. Printable real-size rulers in cm and inches, a calibration check page, a paper measuring tape and a coin and card size reference.
$3.00 USD, one-time 3 files · about $1.00 each
- Instant download
- 7-day refund
- Secure checkout by Stripe
7-day money-back guarantee. Full refund within 7 days of purchase, even after you download.
Printable Real-Size Ruler PDF
Printable Size Reference Chart