The Brunton Micro Baseplate Compass 28NL is very small. In fact, this Brunton Compass is Micro. The Brunton Micro™ baseplate keyring compass comes along for the ride without imposition. You get cardinal points and a millimeter scale. The Micro Baseplate Compass, a very popular brunton baseplate compass, comes with an attachment point and a liquid filled compass movement. Use the keyring attachment hole it to secure the Micro to the zipper of your jacket or daypack without it being in the way or weighing you down.