Usually they are placed on very small mass, usually a few kilos. Regarding its use, it is not only restricted to the home. We feel his presence in laboratories (precisely because what weight is of lesser magnitude, the scale would not be so necessary in this case) in numerous industries and companies that want to determine the weight of their products. Therefore, not only weigh a given object but also – as in laboratories, for example – many substances of various kinds. Imagine now costs only one type of tool for measuring the weight because there are now advanced electronic models show great precision and speed in its task of measuring the product or substance . The truth is that in ancient times used those mechanically operated with a slow significantly higher than today. One of the first mechanisms used was the one that had two equal arms, also called parallel arms. This model had its moment of greatest use to the Egyptians and is believed to date from more than 2,000 years before Christ. This symmetrical arms system works as follows. There was a bar on the device should be in a perfect counterbalance.

Of the bar fell off two plates, one from each end. In turn, the bar should be supported by a support that had to be the smallest possible. However, as the process of measuring the mass , it should proceed as follows. First, it was appropriate to place the product I wanted to be heavy in one of the dishes, which we will call A dish or plate number one. Once done, the plate B and plate number were gradually putting weight, which also had to have a fixed and known weight. To determine if the balance had reached its highest point of balance, had noted that the bar was in a horizontal position. Once you have reached this balance, the harmony between the two arms, between the two plates, that was the time when an estimated weight of the product or substance, the so-called weight control.

This comes from the whole sum that has been made ​​of the weights that were placed on the plate B. This weight is, of course, the weight of the product that we wanted to determine the operation and, of course, the product weight was placed on the plate A is the same as the weights that were on the plate B. But the example above was not, of course, the one that was implemented to measure the weight. There was another system, akin to the Roman. This type of mechanism was also operating on a rod held by a support and the weighing is carried out through one dish where you put the weight we wanted to determine with accuracy. While here the method is almost equal to the previous example, the fundamental difference is that in this case the arms are not equal or symmetrical. In one arm, which turned out to be the shortest, was placed to determine the weight. The long arm, meanwhile, had no plate directly. That is, what was called a pylon had a sort of sliding weight, which was located on a numbered rule. This trough was moving away or toward the weight to the foothold to reach the goal always pursued: the perfect balance.

The old analog scales have been replaced by sophisticated electronic devices that can provide a digital measurement of weight immediately.

These scales are used both in the home through the bathroom scale, as in the work with precision industrial scales that are capable of measuring up to tons.

Bathroom or kitchen scales digital
Technology has allowed scales to shrink to a minimum, being very fashionable lately, transparent scales that reduce the visual impact and can be stored in any space.
In the kitchen for weighing food remain in force the old analog scales , while day to day are being replaced by their digital companions.

Industrial Scales
The scales employed in the industry take multiple forms depending on the object to be weighed. Thus the scales can be a platform, hanging scale style, U, or adapt many other forms.
These teams can be used to weigh all kinds of objects, animals, people, vehicles, food, drugs, jewelry, finding plenty of specific models for each function.

In each case we will need different details, so that even a food such precision is less important than the jewelry though. The absolute accuracy depends on weight, so ask for much more precise the higher the price of the scale.

The scale or balance was important in ancient times to determine the price of things like food and tools were sold at the time, from this time reflects the importance of scale to the development of some human activities such as mercantilism.

The weighing scale or older has its beginnings in the year 5000 BC, where the first signs of weight measurement were made by the Babylonians and Egyptians. These rustic scales were so efficient that the error was only 2 percent, experts said today.

This useful tool begins its development better known in ancient Rome, where the invention of the balance by charging merchants for the products was the main development to what they are today.

The scale gave his big step in the seventeenth century when the investigation of Roberval in early on an idea by Leonardo Da Vinci, the use of the pendulum method to not only determine which object was heavier, but also the power to determine the exact weight of each was shown to be the best idea to calculate the actual weight.

Many hypotheses were tested until the nineteenth century where the order could be applied with great success the pendulum method, the design of this scale took an unexpected turn to the economic movements, and that’s not being charged for the equivalent objects by weight , but its price began to vary by factors such as manpower, time and difficulty of processing.

Currently the use of scales in the markets is the most common practice where these are used as agricultural products are paid mainly fit your weight.

The scales have now changed considerably and diversification took the point that development of them for specific activities was an excellent choice; As above these are some types of scales:

• Scales for weighing trucks, these are high-capacity scales and usually are located on roads and businesses in order to control the weights to carry.

• Scales for goods: they are usually platform scales located at ground level for quick and easy measurement of the weight of the goods, the scale of goods are mainly in stores and businesses.

• pharmaceutical scales: this type of scale is most commonly found in medical offices and pharmacies as they are called to calculate drug for medical purposes, the fat levels of each individual weight.

Currently, some pharmaceutical scales have been so developed that by taking the weight, also provide a person with recommendations for improved fitness and weight indicate height agree that it should have.

• bathroom scales, bathroom scales are very common these days, because in general each house there, this scale is very simple and serves to quickly calculate the weight of people’s home.

In conclusion, the scale has been an important tool in the course of human evolution for both economic and healthy.

The scale also has a black background in the murky history of obesity treatments. Millions around the world have been punished (and still do) for the results obtained in the scale. Pay little attention to their weight and more interest to the circumference of your body.

The biggest drawback there is that the scale has low specificity.
Specificity is a term frequently used in medicine and its meaning is the following: the ability of a study to accurately define or diagnose any disease.

For example, the thermometer is not very specific. We can not tell if someone has a fever because you are infected, recently presented a cerebral hemorrhage, have developed some form of cancer, or is an allergic reaction.
The weight is changed for many reasons that have nothing to do with reducing or increasing body fat. I will present some examples to explain this situation:
EXAMPLE 1: A distraught woman decides to be weighed daily to know exactly when to start getting fat. Finds, with surprise, that despite care in an exaggerated way, you gain weight in their menstrual cycle. Decided wrongly punished are getting fatter and even more your diet, when the real cause of the increase is menstruation.

EXAMPLE 2: A couple decides to vacation in a warm place and notes that after two days increases by two pounds. Start a diet full reduction in rental, even though her clothes still remains the same. She does not know that any increase in temperature favors accumulation of water with no weight gain and increased body fat.

Example 3: A young man decides to take care of yourself with exercise and was disappointed to realize that instead of losing weight is rising. In nothing is the explanation of the coach who says the increase is due to increased muscle and even though your clothes fit looser, decided to suspend the exercise not to continue gaining weight.

EXAMPLE 4: A young woman goes to a party, where you take two glasses of alcoholic beverages. Notes horrified that after 48 hours up to two kilos of weight and decided to go on a diet to eliminate what has risen. She does not know that alcohol consumption favors temporary retention of fluids and do not increase body fat.

Example 5: A woman decides to go with the fashionable doctor to lose weight and out of the office with a bag full of pills, drops and powders. From day one note to be run to the bathroom every half hour and the scale clearly shows he has lost 4 or 5 pounds. Ignored their urgent needs to go to the bathroom and continued with his treatment, without realizing it, or worse, deceiving themselves into believing that weight loss is fat reduction, not elimination of water caused by a diuretic.

Example 6: A man accustomed yourself with diets lower in sugars. On one occasion, making a dessert and the next day is increased by two pounds. Incorrectly concluded (despite his clothes being remains the same) to 100 grams of cake have become two kilograms of fat. He does not know that diets low in sugar content so dehydrated that taking one and recovered 2 kg of sugar water and not body fat.
The scale does not precisely define the increase or decrease body fat. Worse, does not determine how much excess we have. Get on the scale to weigh fat, muscle, water, bone and viscera. We can not know how much of our weight for each one of them.
Excess fat is more precisely define the measuring tape to measure the abdomen and hip circumferences.
The martyrdom led to weigh not only unnecessary, it is also unrealistic to think that the scale can tell us how much we have lost or retain fat diets.

If an individual muscle up as fat can be removed to gain weight and should not be interpreted as poor performance or increased obesity. If weight loss may be due to muscle and not fat.

Losing weight often means that there is a disease.
Torture, sadness, anxiety or possibly happiness we experience the ever pesarnos is related to the fat in your body.
Is it worth it weigh? If done correctly, can serve as one of many indicators to clarify the changes generated by the diets.
body through which the medicine is called anthropometry. This is a contrived word for a relatively simple measurement of body with tape. If at some point in their life has gone to a tailor to fix an item you already know the anthropometry.
Anyone with a genuine interest in reducing excess fat (and not only be deceiving you want to) must learn to measure their circumferences of the body.

BodyTrace is a digital body weights that have a wireless connection to connect to the internet.
The advantages of this scale, when you weigh, the weight will be automatically uploaded to their web (wirelessly) which means that all people from around the world can see how your weight.

In this way, BodyTrace expected to motivate the user to quickly lose weight is already visible fat.

Scale BodyTrace sold for U.S. $ 120 (approximately Rp. 1200000) and to be Uploaded into their web, we are also obliged to pay the cost of U.S. $ 20 (approximately Rp. 200,000) for the 3 months.

The BodyTrace eScale is a bathroom scale that wirelessly uploads and displays the user’s weight at the BodyTrace Website. Since it’s using wireless connection it does not require any software confguration for use. The Website’s motivational interface encourages users to share progress, exercise ideas, recipes and lets people create groups made up of friends, family, or co-workers to work jointly towards a common goal. Users can even upload progress pictures to motivate themselves and others!

The comprehensive weight monitoring system includes interactive weight and BMI charts, food diary and intake calculator that gives guidelines on fat, protein, water, carbs and calories.

Not sure exactly, whether this way will be successful or not and we think these considerations should be given great speakers who will read the results of your weight as hard as possible so that the village will know. Well, it might just be successful.

These devices can be used to weigh all kinds of objects, animals, people, vehicles, food, drugs, jewelry, finding plenty of specific models for each function.

In each case we will need different accuracies, so that when a food despite such precision is less important than the jewelry though. The absolute accuracy depends on the weight, so ask for much more precise the higher the price of the scale.

The old analog scales have been replaced by sophisticated electronic devices that can provide a digital measurement of weight immediately.

These scales are used in the home through the bathroom scale, as in the work with precision industrial scales that can measure up to tons.

Bathroom or kitchen scales digital

Technology has allowed scales to shrink to a minimum, being very fashionable lately transparent scales that reduce the visual impact and can be stored in any space.

In the kitchen for weighing food still apply the old analog scales, while day to day will be replaced by their digital companions.