A ten-centimetre reference line on a PDF prints slightly shorter. The printer may be working normally while the print dialog scales the page to fit its printable area. That is helpful for reading, but inconvenient for a measured template.
Acrobat distinguishes Fit from Actual size. Fit can resize the page; Actual size prints without scaling, although content outside the printable area can be clipped. Also compare the document's paper size with the loaded paper and the printer setting.
Use one test page containing a clearly labelled reference line. Measure the output with a ruler before printing the whole set. Do not calculate a correction from the document's appearance on a laptop screen; screen zoom says little about physical print size.
The printer driver may provide its own layout or scaling options. Avoid combining an application adjustment with another unexplained driver adjustment. If exact size clips important content, use suitable paper or a revised document layout. Shrinking it until it fits changes the dimensions you were trying to preserve.