They all used grease pencils anyway, like you do on boats, which don't leave conductive shavings. http://www.spaceflownartifacts.com/flown_writing_instruments.

They all used grease pencils anyway, like you do on boats, which don't leave conductive shavings. http://www.spaceflownartifacts.com/flown_writing_instruments.html http://www.spaceflownartifacts.com/flown_writing_instruments... edit - and lots of other pens as well, the link above seems fairly comprehensive.