Instruments for measure weight

In ancient times we could find numbers elements for weight measurement. Some are the following:

1º Balances: As it is known, scales are the instrument that has more antiquity that has been used to weigh, at the same time, it is also the simplest instrument. There are different types of scales, although all were very similar visually, the internal mechanisms varied and made them more or less precise, depending on what was to be used.

     - Balance of cross

     - Balance of saucer

     - Pharmacy balance

     - Precision balance

2nd Weighing machine: This instrument serves to weigh medium and large objects, this occurred by an internal mechanism which multiplied the weight that was placed in the outer box by ten or a hundred, until balanced with the placed on the platform.

3rd Pesacartas: They were used in the post offices. They also served to weigh small objects. There were table and pocket.

4th Romana: It is a lever with very unequal arms, the object that is to be weighed is placed at the end of the arm less and is balanced by the weight on the larger arm.

5th Dynamometers: They also received the name of pocket Romans, since they had the same function only for small objects, they used to use it for street trade.

6th Pocket weight: They could measure objects with large size. The different rings that they had allowed to place the objects to be weighed in different places, so, observing the corresponding scale, to make heavy objects of different sizes.