The Allen Pin on Ball Compass is liquid filled, easy to read and works at any angle. With a safety pin type attachment and luminous dial, this compass can clip just about anywhere so it's easily accessible.

Integrating the revolutionary Brunton O.S.S. system into a small, tag-along compass, the new Brunton Tag-Along Zipper-Pull Compass also features a tough, compact base plate and 5 degree resolution. The Brunton Tag-Along Zipper-Pull Compass features: 5 degree graduations Brunton O.S.S. alignment system Perfect for the zipper of your jacket Dimensions: 2.15"x2"x0.7"