The map gives us a general idea of the terrain and the ability to navigate it. The compass helps determine the direction. But when moving a chart, an important component is the ability to determine distances as accurately as possible. To have an idea of how much has passed and how much is left to the object or site selected as the end or turning point. In the absence of any electronic devices, such as a GPS navigator or electronic pedometer, the distance traveled on the ground is usually measured in steps using the simplest pedometer.
The simplest field pedometer, Pace beads, overview, features of the device and field applications for counting pairs of steps.
This method is used when moving in azimuth, composing terrain maps, plotting on a map (diagram) of individual objects and landmarks, in some other cases. Steps are generally considered to be pairs. After each hundred pairs, a mark is made in some way and the countdown continues again. Before starting the movement, the distance measured in meters is converted into pairs of steps.
The issues of measuring the step length, translating them into meters and vice versa, measuring distances by pairs of steps, the errors that arise, as well as factors affecting the step length is a topic for another, separate article. Therefore, we will not consider them here, but we will dwell in more detail on the features of taking into account the distance already traveled by steps.
During movement, many natural distracting factors act on a person, including adverse weather conditions. Attention is scattered and if the distance that you need to go is measured in several hundred meters, or even a couple of kilometers, then along the way, having gone astray, it is very easy to lose track of the distance traveled. Therefore, in order not to bother yourself. Do not mumble under your breath and remember in your mind the number of hundreds of steps already taken, you need to use some kind of impromptu scores.
For example, just collect a few small stones or acorns, and then transfer them from one pocket to another every 100 meters. Make notes on paper. Tie knots on spare shoelaces or piece of rope, etc. However, the self-made simplest field pedometer Pace beads will be more adapted to taking into account the distance traveled. It is a base, with the means of reference put on it. As the basis of the pedometer can be a piece of cord from any material or paracord, with a node in the middle. On which are usually strung four or five beads at the top and nine beads at the bottom.
Beads can be from any material. Any shape and size. For example, leather or rubber wheels. This is the worst choice, since it is difficult to use them in the dark or when wearing gloves, you cannot easily distinguish them by touch. Pieces of rubber tubing, plastic, ceramic or wooden balls, shards glowing in the dark, etc. The main thing is that they do not slip and do not move on the cord independently. Using such a pedometer is very simple, walked 100 meters (100 pairs of steps), moved one of the nine lower beads. Passed 1000 meters (1000 pairs of steps), moved one bead from the upper section, and removed the bottom nine to its original position, etc..
With practice, counting the distance traveled using such a pedometer will become nothing more than a background subconscious action. This will significantly increase your ability in ground navigation. Despite its simplicity and primitiveness, such a simple pedometer is still popular and is used in special forces of various armies. For example, such as the American Ranger Regiment, Special Forces, Navy Seals, the British SAS and others, where they are known as Pace beads. When counting the distance traveled, try not to go immediately behind or next to other walking ones. Their pace can affect your rhythm and disrupt the accuracy of your calculations..