Jotter

The Parker Jotter is the Parker Pen Company's second and best-selling retracting refillable ballpoint pen. The first was the Hopalong Cassidy ballpoint. (Later a fountain pen, mechanical pencil and roller ball pen were introduced to the line. However, this entry primarily covers the ballpoint pens identified as the "Jotter"). As with many other ballpoint pens, it can also be converted into a gel pen by simply changing the refill. Since 1954, over 750 million have been sold worldwide. It is a moderately priced quality pen and has become somewhat of a standard by which ball pens are measured. Its refill, originally called the T-Ball (T is for tungsten), had a unique spherical porous metal writing tip now commonly used in the pen industry. The pens are also a popular advertising medium and considered a "premium" promotion. The external design of the Parker T-Ball refill is a configuration now used by many other brands of refillable pens.