Parker Jotter

The Parker Jotter is a retractable ballpoint pen manufactured by Parker Pen Company. The first was the Hopalong Cassidy Parkette ballpoint made for children. Since 1954, over 750 million have been sold worldwide. It is priced between $6 for lower end models, and $20 for higher end models, such as special editions. Its refill has a ballpoint tip originally called the T-Ball (for tungsten), with a unique textured surface that greatly reduces slipping and failure to transfer ink onto slick paper, known as "skipping". The technology is now commonly used in the pen industry. The pens are also a popular advertising medium. The external design of the Parker T-Ball refill is a configuration copied by many other brands of refillable pens.