The Fisher Space Pen is well known for its ability to write in zero-g environments as well underwater and on nearly any surface. But Fisher also offers a pressurized pen with the handyman in mind: the Multi-Purpose Contractor Tool Space Pen. It’s a rugged multitasker that does a lot more than that pencil nub you carry ‘round in your pocket.
As with all of Fisher’s “space pens,” its most impressive feature is the gas-charged pen cartridge which provides a constant flow of ink to its tungsten carbide writing ball. It doesn’t even use normal ink, instead containing “thixotropic ink” which has a consistency similar to that of thick rubber cement. The shearing action between the ink and writing ball briefly liquefies the ink allowing it to adhere to hard-to-write-on surfaces like metal and plastic — or even wet surfaces.
You can remove the pen from its tough ABS plastic case, but the case is useful, too: it features handy level and plumb vials, reference angle and measurement marks, and a magnetic base that keeps it from rolling away.
Street pricing starts at a very reasonable $25.00.