The Fisher Space Pen Contractor Tool Ballpoint Pen. Although Fisher Space Pens are designed for space usage, the Fisher Space Pen Contractor Tool Ballpoint Pen defies all rules and intention. Devised with the same pressurized ink refill, this handyman-intended space pen doesn’t only prove to be a useful writer by performing on unconventional surfaces like metal, plastic and even wet surfaces, but is also multi-tasker. Packed with handy features such as plumb vials, reference angles, measurement marks and magnetic base, this is the ultimate pen for the outdoor man/woman.