The tool is usually constructed using a set of 13 or more beads on a length of cord. The beads are divided into two sections, separated by a knot. 9 beads are used in the lower section, and 4 or more beads are used in the upper section. As users walk, they typically slide one bead on the cord for every ten paces taken. On the tenth pace, the user slides a bead in the lower section towards the knot. After the 90th pace, all 9 beads are against the knot. On the 100th pace, all 9 beads in the lower section are returned away from the knot, and a bead from the upper section is slid upwards, away from the knot. In this manner, the user calculates distance travelled by keeping track of paces taken. To use this method, the user must know the length of his pace to accurately calculate distance travelled. Also, the number of paces to be walked must be pre-calculated, or the distance travelled has to be calculated from the walked paces. Another method - For every 100 meters the user walks, one of the lower beads is pulled down. When the ninth of the lower beads is pulled, the user has walked 900 meters. When the user has walked 1000 meters, one of the upper beads is pulled down, and all the lower beads are pulled back up. Using this method the user must know the number of paces walked in 100 meters. An experienced user can also adapt the pace count for each hundred meters depending on the terrain. When using this method the user does not have to calculate or look up how long a distance to walk or the distance travelled. This method can of course be used for non-metric distances as well, though with the beads arranged in a different manner.
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