Cycling is a sport of millimeters: the width of a tire, the diameter of a seat tube, the thickness of a handlebar -- it all can make a difference. To stay on top of it all, you need something that can provide quick and accurate measurements. The Feedback Sports Digital Caliper is an affordable but indispensable addition to your toolbox.Feedback Sports prides itself on the sensitivity and accuracy of its digital measuring tools. With a dimension table for common bicycle components printed right on the Digital Caliper for quick reference, you have everything you need to measure bottom brackets, steerer tubes, handlebars, and more. The Feedback Sports Digital Caliper can display both inches and millimeters and comes with own protective carrying case.