A plotter draws a pattern at full size onto a wide roll of paper, using a pen rather than a print head.
Plotting replaces taping together dozens of A4 sheets. Print shops offer it by the metre, so it is worth it even without owning a machine.

Digitize sewing patterns without tracing.
Test PatternScan Pro free for 14 days with the full feature set. You need your smartphone, a printer and one pattern you always wanted digital.