Fisher Space Pen

This is the tougher 'clutch' variety of the stone cold classic Fisher Space Pen — designed specifically for use in oil fields, it is perfect in even the harshest conditions. It writes in freezing cold, it writes in scorching heat, it writes at any angle including upside down (!), through grease, even underwater, and for three times longer than an average ballpoint pen.

Its hefty hexagonal finger grip design ensures that you will maintain a solid grasp on the pen even when wearing thick gloves, and its composition of black anodized aluminum provides both a sturdy and lightweight feel in hand.

Sounds dad approved to me!