If you want to know the distance between two points in a straight line, measure the corresponding segment on the map with a ruler. Preferably, it was made from thinner sheet material. In the case that the surface on which the spread out map is not flat, to help tailor the meter. In the absence of a thin line, and if the card is not a pity to puncture, is convenient to use for measuring the compass, preferably with two needles. Then you can transfer it to graph paper and measure the length of line on it.
The road between the two points on the map are rarely straightforward. Measure the length of curved line will help the device - odometer. To use it, first roller rotation to align the arrow with zero. If the odometer is electronic, set it to zero manually is not necessary - just press the reset button. Holding the roller, press it to the starting point of the segment so that risk on the housing (located above the roller) was pointed right at this point. Then keep the roller on the line while the risk will be combined with the endpoint. Read the testimony. Be aware that some of the curvimeter there are two scales, one of which has a graduation in centimeters and another in inches.
Locate on the map pointer of the scale - it is usually located in the lower right corner. Sometimes this pointer consists of a segment of calibrated length, next to which shows to what distance it corresponds to. Measure the length of this cut line. If you find, for example, that it has a length of 4 centimeters, and next to it is specified that corresponds to 200 meters, divide the second number by the first, and you'll learn that each centimeter on the map equals 50 meters on the ground. On some maps instead of a cut there is a ready-made phrase, which may be, for example, as follows: "an inch is 150 meters." Also the scale can be specified as a ratio of the following type: 1:100000. In this case, it can be estimated that one centimeter on the map corresponds to 1000 meters on the ground, as 100000/100(inches per meter)=1000 m.
Measured with a ruler or odometer distance, expressed in centimeters, multiply by the specified on the map or the calculated number of meters or kilometers in one centimeter. The result is the actual distance, expressed respectively in meters or kilometers.
Advice 2: How to determine distance on a map
Any map is a reduced representation of some territory. A coefficient indicating how much the image is reduced in relation to the real object is called a scale. Knowing him, it is possible to determine distance on the map. For real maps on paper to a scale value fixed. For virtual, e-cards, this value varies with the zoom of the map on the screen.
If your card is on paper, find its description called a legend. Most often, it is thermochem design. The legend must contain the map scale, which will tell you how much measured in centimeters distance on this map will be in reality on the ground. So, if the scale is 1:15000, this means that 1 cm on the map equals 150 meters on the ground. If the map scale is 1:200000 1 cm, pending it is 2 km in reality
Measure the distancethat interests you. Note that if you want to determine how fast you can walk or drive from one house to another city or from one settlement to another, then your route will consist of straight line segments. You will not move in a straight line, and trails along streets and roads.
In fact, the distance between the start and end point of your path is longer than the distancemeasured between the start and end points of the path. The measurements were accurate, put on the map the route of your movement in the form of short and long straight lines, determine their amount and find out actual distancethat you need to overcome.
To determine distance via the map, you can use one of the many GIS programs that you can find on the Internet. There are specialized programs used by the transport company. By setting the start and final destination, town, you can get a card which will be caused to route your route and it shows the total distance and the distance between the nodal points of the route.
Distance on the map can be measured using the Ruler tool GIS packages, Google Earth and Yandex Maps, the underlying cause for the cards which are space satellite images. Just select this tool and click on the point that marks the start of your route and where it will be finished. The distance value can be learned in any given unit of measure.