Other branded promotions simply don't measure up to this novelty caliper pen! This 6" plastic tool has realistic looks, but writes like a regular pen. Just give the depth rod a click to activate the plunger-action ballpoint. What a great way to connect with engineers, draftsmen, auto mechanics, machinists, home improvement contractors, construction workers and more. A natural match with trade shows, conventions and seminars. Choose from two colors and add your school, sports team, organizational or company logo or message to customize.