This Skull Klick Counter is ideal for anyone that wants to measure their pace.
First, find out what your actual pace count is to 100 meters (Try it 3 or 4 times to get an average.) Next, pull both sets of beads up as far as possible. For every 100 meters you travel, pull down a bottom bead. When all the beads are pulled down, you've reached 900 meters, walk another 100 meters and slide all the bottom beads back to the top, you've reached 1000 meters (1 km), so pull down a top bead.