An ordinary ballpoint pen is held in a spring-loaded carrier, which provides just enough pen-to-paper pressure ... generate a vector image which doesn’t take too long to draw, but still results ...

Jean-Baptiste Oudry, “Belphagore” (1734), brush and black ink, gray wash, heightened with white gouache, on blue paper; 12 1/4 x 10 1/4 inches (image via ... conservator of drawings at the ...