The Weight can be determined either by a direct measurement, or through the mass comparison of two weights, of which minimum a weight value must be known. For the direct measuring method, you must involve the local acceleration of gravity. It has high demands on the precision of weighing, we adjusted the balance locally and performs a measurement under the following link; (Weight force N) = (weight in kg) (m/s 2 gravity acceleration) where the normal computing a way acceleration due to gravity is negligible due to their minimal deviation of maximum one percent. One can distinguish types of scales either after their construction, their areas of application or the accuracy. Partial scales are also in their application to distinguish their accuracy.

It should be clear in any case that one uses a very finely calibrated postage scale E.g. in a post office, as calibrated and accurate to the gram. The deviation can be higher when crane scales or E.g. truck scales on motorways, but should be in one for the benefit of the respective keep manageable framework. The areas of application of different scales, and thus their applications is seemingly not to overlook, the design and the technology behind it infectious, however, already. So, you can specify scales very exactly according to their design.

As examples, among others Federwaagen(Schraubenfederdehnung) would be to call Ringkraftmesser(Verformung) and body fat scales (Ektroden). Mechanical scales this work according to the above principles, namely mass comparison and weight. Examples of scales with the mass comparison principle; A triple-beam balance measures the balance of two weights. (Source: Michael Steinhardt). In the simplest case, it is a balance beam, mounted in the center of rotation, two scales are attached to their ends. A mechanically-induced measuring error can be compensated for balance scales by one alternately compares the weights to be determined by the addition of mini time weighted additional counterweight on the other pan.