I am new to Illustrator with little prior digital art experience. I am in art sign trade and am required to produce artwork (artboard) shapes, types, and lines to an exact area size (say, +/- 1/8 in. or 4 mm).
For example, when I print specifying a 5" × 24" artboard, it prints out about 15% smaller on tiled pages using US-letter inkjet printer. How to create print output to nominally exact sizes? Your help would be the most welcome.