sixpenceee:This video shows close-ups of how a ball-point pen writes. You can watch it here


sixpenceee:This video shows close-ups of how a ball-point pen writes. You can watch it here
sixpenceee:This video shows close-ups of how a ball-point pen writes. You can watch it here
sixpenceee:This video shows close-ups of how a ball-point pen writes. You can watch it here