What is a plotter used for?

A plotter is specifically designed for printing vector graphics and is commonly used in conjunction with computer-aided design (CAD) software. This makes it ideal for producing high-quality copies of CAD drawings, blueprints, and engineering schematics. Unlike standard printers, plotters can handle large formats and produce precise, detailed line art, which is essential in fields such as architecture and engineering where accuracy is crucial.

While plotters can also create visuals that resemble drawings and may include aspects like sketches, their primary and most recognized function is to provide detailed reproductions of CAD files. This capability makes them a vital tool for professionals who need exact, large-scale representations of their designs. Therefore, the correct answer emphasizes the plotter's significance in making CAD copies, aligning with its specialized use in technical and professional environments.