Printer scale test
Most printers shrink pages by 3 to 6% unless you tell them not to. Print this one page at 100% (also called Actual size or No scaling), then measure the two 10 cm bars with a ruler. If both measure exactly 10 cm, your phone case inserts will fit.
How to print at 100% on every system
- Mac (Preview): File, Print, then under Scale choose 100%. Untick “Scale to fit”.
- Windows (Edge or Acrobat): in the print dialog set Scale to 100% or choose “Actual size”. Turn off “Fit to printable area”.
- Chrome: open More settings and set Scale to Default or Custom 100. Untick “Fit to page”.
- iPhone and iPad: AirPrint prints PDFs at full size by default; check that no “Fit” option is on in the Options menu.
If the bars are not 10 cm
Shorter than 10 cm means the printer scaled the page down. Look for “Fit to page”, “Shrink oversized pages” or a percentage below 100 and change it. Longer than 10 cm is rare; check the paper size matches the paper in the tray (A4 vs Letter).