25 centimeters using a ruler. Without a measuring ruler or measurement with bare hands. Taking measurements for men's clothing

When there is absolutely nothing at hand

If you have absolutely nothing at hand, you have at least arms and legs. And, although we are all different, on average, some parts of the bodies of all of us are quite close in size.

The English system of measures is based on this fact, the basic units of which are feet and inches. Inch means "thumb" in Dutch. Look at your fingers: each finger is divided into three phalanges, approximately equal in size. So, the length of each phalanx is an "inch". IN different countries inch sizes vary from 23 (Mexico) to 37 mm (Prussia), but the most common English inch is 25.4 mm.

Measure the nail phalanx of your index finger. I got a reference English inch of 2.5 cm. Here you already have a primitive measuring tool. Of course, calculations with the help of fingers will be very, very approximate, but still it's better than nothing.

For more significant distances, you have another tool - the foot, which in English sounds like "foot". A foot in the English system is equal to 12 inches. In some systems, a foot is equal to 10 inches (decimal inch). The range of foot length in different countries is from 250 (Ancient Roman) to 383 (Leipzig) mm. An English foot is approximately 305 mm. So, if your feet are medium in size, you can focus on this value. If you know your height and are not afraid to lie down on the measured surface, you can measure the distance in "parrots", that is, in terms of your height, as in the famous cartoon.

When there are various small things at hand

If you have a piece of paper in a cage from a standard Soviet-style notebook, you can assume that you have a ruler - the size of the cage is 5 mm. The coins will be yours too indispensable assistants. For example, 5 Russian rubles or 5 Soviet kopecks have a diameter of 25 mm. 2 Russian rubles - 23 mm, 1 ruble - 20.5 mm, 50 kopecks - 19.5 (in total, the ruble and fifty kopecks give exactly 40 mm, and their difference is 1 mm). (Sorry, I didn’t have time to measure the catfish, if anyone is not too lazy - put it in the comments!)

Banknotes from 10 to 500 rubles have dimensions of 150 x 65 mm. And the larger ones are 157 x 69 mm. A standard faceted glass is 65 mm in diameter and 90 mm high. The RF passport has dimensions of 88 x 125 mm.

So: 1 meter is 40 nickels in a row or 200 cells of a notebook or 6 and 2/3 small banknotes length-to-length or 14.5 large banknotes width-to-width or 15 faceted glasses in a row + a finger phalanx or 8 Russian passports docked in heights .

If you have a small ruler, but you need to measure large things or distances

In this case, there are several ways to measure, of which the most obvious is:

1. Connection of small dimensions.

You measure a section equal to the marked length of the ruler, make a mark, apply a zero division to this mark and repeat the procedure further, following to the end of the object being measured. True, in this case, you will accumulate an error caused by the inaccuracy of combining the risks with the zero mark, as well as the possible deviation of subsequent measurements from the initial direction. You can reduce this error by making not one, but two marks - in the middle of the ruler and at the end, and at the next measurement, combine both marks, starting the next measurement from the middle of the previous one.

2. Measurement pyramid method.

A faster and more accurate method is based on building a measurement pyramid. We first find an object that we can measure more or less accurately, then we find another object that we measure not with a ruler, but with the first object. Then we measure the third object with the second, and so on. For example, we have a 150 mm ruler. We find a stick about half a meter long and measure exactly 500 mm on it. Next, we find the rope and measure 5 meters with this stick. Next, we measure the desired distance with ropes. If we need to make a lot of measurements, then the rope will help us accomplish our plans much faster than the original ruler.

3. Wheel method.

If we have something round that can be rolled on a measured surface, we can use the wheel method. We measure the diameter or radius of the circle. We make a notch on the measured surface and on the wheel. We combine serifs, and we begin to roll the wheel, counting the circles. Next, multiply the number of circles by the diameter and by "pi". Or a radius and 2 "pi".

If you have a bicycle, then by measuring the diameter of its wheel and making a mark with chalk on the wheel and asphalt, you can simply ride the bike, counting how many times the mark flashes. In this way, considerable distances can be measured.

And finally: if you have an iPhone, you can install the Apple-o-Meter program (Yablokomer) on it. This program calculates the distance by itself, your task is only to “turn over” your phone along the measured surface, if possible exactly along the line.

And do not forget to remove the cover so that it does not introduce an error.

Measure with a ruler or tape measure. Find the object or distance between two points that you need to measure.

• It could be the length wooden board, thread or fabric, or a line on a sheet of paper.
• A ruler or meter is best for hard and flat surfaces.
• If you are measuring a person for tailoring, it is best to use something elastic, such as a measuring tape.
• Longer distances can be measured with a tape measure.

Measurements without a ruler!

Sometimes, situations arise when you need to measure a certain length at least approximately, but you don’t have the necessary measuring instruments. For these purposes, there are many ways that you can use to measure length and distance. The very first, and well-known, method that requires only knowledge of your height, measuring the distance "in parrots" (by analogy with the well-known cartoon). The presence of a leaf in a box speaks for itself. Knowing the length of the foot, you can also use it, if only just to measure the required longer segment on the stick, and with the help of it (the stick) take measurements according to the principle: pyramid of measurements. Rope, wires, or similar flexible materials can be measured by holding them at your fingertips. To do this, it is necessary to take any straight arm to the side, and bend the other at the elbow and direct it in the same direction of the abducted arm. Thus, we get the distance from the tip of the ring finger of one hand to the tip of the ring finger of the other hand, equal to approximately one meter. You can use coins or banknotes, unless of course you know their diameters or sizes, the only difficulty is remembering them. If the iPhone is in your pocket, then you can measure the distance not only with the iPhone itself knowing its length, but also use mobile applications specially created for this purpose (Apple-o-Meter, etc.).

The approximate distance or length, with a small error, can always be determined.

Comments

You can still measure degrees with an iPhone. Not in alcoholic beverages, of course (I have not yet heard about such a program for him), but the angle of inclination. By measuring the circumference with an iPhone, you can calculate the diameter using the iPhone again)). So on such a device, it is better not to save.

That's an ambush, and what am I going to do with my Highscreen? (((I have a compass there, and a tape measure. And a protractor, and a level, and somehow they don’t come in handy. Got it! If it were an iPhone, it would certainly come in handy. You must definitely justify such things, otherwise why take it? ???!!!

That's the point, when you need it, no, when you don't need it, you have it)). Also, everyone has the same passport in size, also an option. Like iPhones-dollars, you also always have to carry it)))

How can you measure length or distance yourself?

I will supplement the answers of consultants and offer a few more simple ways for measuring.

For example, a chain is a male and female jewelry. All chains usually have different length which is indicated on the label. So, for example, with a chain of 50 cm, you can even measure the length and height of the walls. Moreover, using the chain, you can calculate the area of ​​any surface.
Or shoelaces. As a rule, all laces have a certain length, so by pulling out just one lace (and if two laces are tied together, you can get a whole meter), they can measure anything.

And the simplest ways to measure length are human hair; pillowcase (one side is usually 60 cm); table (if you know its size, you can attach something - for example, women's tights, measure desired length, and then measure them); passport; driver's license; metro pass, credit card. And many, many other ways.