Technical drawings of fishing rod components and mechanisms fill this chalkboard-style composition, rendered in white lines against a dark charcoal ground. The patent illustration captures multiple views and cross-sections with the precision of an engineer's hand, creating a layered, instructional aesthetic that celebrates the ingenuity of angling equipment artwork. Printed to order on a soft, absorbent mat with a no-slip backing, ready underfoot the moment you step out. The kind of art you don't expect on a bathroom floor.