Fisher Space Pen

The Fisher Space Pen is a great pen for travel. The ability to write in any conditions is a huge plus. When the cap is moved to the tail the pen is full sized and the weight is very nice. When in the covered position the pen is about half the size.

I have the pocket clip on mine. It is not to clip onto anything but because without it, this is a small flat-black cylinder that will roll into the nearest shadow the second your hand leaves it.

From their website:
Finish: Matte Black
Length: Open – 5.25″ Closed – 3.75″ 
Cartridge: Fisher Pressurized PR4 Black Ink Medium Point 
Packaging: Moonscape Gift Box 
When closed, Bullet Space Pens are the perfect size to carry in your wallet, pocket, purse, car glove box, organizer, or toolbox. When open, it’s a full sized, evenly balanced writing instrument.

The original Bullet Space Pen was conceived in July of 1948. Paul Fisher was soon machining a new pen design shaped from solid aluminum. It became our first Fisher ball point pen, the 400 Bullet Pen, and arguably the most popular pen of the twentieth century. This pen is now all brass with a Matte Black finish.
Cited as an outstanding example of industrial art, the classic design of the Fisher Bullet Pen has been exhibited for years in the New York Museum of Modern Art. The Bullet’s timeless styling has been the topic of many art books and magazine articles. Often imitated, but never duplicated, the Fisher Bullet continues to be our most popular pen.