Ballpoint Pens
Retractable or capped decides how the pen survives a desk. A retractable barrel clicks shut in a pocket and cannot dry out because it is never left open; a capped pen costs less and loses its cap by the second week. Tip width then sets the line, with finer tips suiting forms and carbon copies and broader ones flowing more freely on rough stock. See retractable pens, capped pens and broad tips.
