Roger Cromwell buys and sells fountain pens. He repairs and restores them, knows their history and can speak at length on the various nibs, ink sacs, converters, pistons, barrels and pump fillers that ...

At its most basic, a pen has to do just one thing, but there are so many reasons to choose one over another. Does it glide along the page, or does it drag? Does the ink flow in a smooth line, or is it ...