True-Scale Vector SVG · 1 SVG Unit = 1 mm
Download clean 1:1 vector sheets formatted for A4 or US Letter paper, complete with a built-in 100.0 mm / 4.00 in calibration check bar so you can verify your printer did not shrink the scale.
Mandatory Printer Check: Set Scale to "Actual Size / 100%"
Printers often enable "Fit to Printable Area" by default, shrinking a ruler by 3–6%. After printing, verify the printed 100.0 mm / 4.00 in verification bar against your calibrated screen or physical card before cutting.
Print Scaling
Desktop browsers and PDF viewers often default to “Fit to Printable Area,” shrinking an A4 or US Letter page by 3% to 6% inside hardware margins. Set print scaling explicitly to 100% / Actual Size before printing.
Scale Verification
Every sheet includes a built-in 100.0 mm / 4.00 in verification bar. Check that span against a calibrated screen ruler or a standard ISO/IEC 7810 ID-1 bank card (85.60 mm wide). See our 100% scale printing guide.
Accuracy Limits
Laser fuser heat, inkjet paper humidity absorption, and roller slippage can introduce ~0.2–0.5 mm drift across a full sheet. Treat paper rulers as everyday layout tools rather than NIST-traceable calipers.