The fisher space pen was created for astronauts to be able to write in a zero gravity environment. Also a pen was needed to write or make notes in space. Since pencils produce small particles of graphite dust when writing, this posed the risk of making contact with the electronics of the spacecraft causing havoc. Not only that, the space pen can write in a wide range of temperatures, making it very useful in a wide range of environments.
This is possible due to the pressurized ink cartridge. Also it will write on wet surfaces or waxy type of surfaces. Ever tried to sign a receipt only to find out your pen won't write on it? That won't happen with the space pen. It will also write under water, I'm not sure how useful that could be to anyone but you might be on just the type of work that might require you to write underwater.
The space pen is easy to carry as it is only 3.75" when closed. When you open it, it becomes a full sized pen easy to write with.
One note though, if you decide to get a space pen you might want to check out the pocket clip for it. Since it's completely round, it will roll off any flat surfaces. This could be somewhat annoying at times. But easy to solve by getting the pocket clip.
The space pen comes in a myriad of colors to choose from. From black to shiny silver, the choice is yours. If you ever want to carry a nice pen that will never fail you, this is the one.
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