ES87769U - Conversion and equivalences guide (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

NEW GUIDE OF CONVERSION AND EQUIVALENCES, characterized by the fact that it consists essentially of four superimposed discs, joined by an axis on which they are rotated until they reach the desired position, the first of which has around them some of the coins used. more frequent in the country that is taken as a base. Above has a column headed by the name of that country. A warning follows that the change is approximate. Then the name of the official currency of this country, and finally a series of figures pigeonholed corresponding to the banknotes and coins most commonly used in that country. These figures with which they are put as a basis to compare them with those of the country that is desired and that appear through a transparent sector that is located next to this column. Through this transparent part you can see (on disk # 2) the column of the country you are looking for, in which the name of the nation is read first; second, the approximate change between the currencies of both countries; third, the official currency and its fractions; fourth the currency amounts of this country equivalent to the figures of the base country's currency that appear at the same height of each one of them. In the first disc you can also see the date in which the calculation of these changes has been made. Returning to the model, there are two other discs whose handling is very similar to the previous ones. The third one carries around 24 numbers that correspond to the hours of the day; 12 of them go on a black background to indicate that it refers to hours at night and the other 12 on a white background that corresponds to daytime. These numbers coincide with other groups of nations that go on disk # 4. Each group brings together those countries that are governed by the same time. It is enough to place the country whose hour is known below the corresponding figure, to know the time it is at that moment in any other part of the globe. Disc No. 3 also consists of a series of columns headed by two units of weights and measures, one of each system. Next, a series of figures that correspond to the unit that appears in second place. Disc # 4 also has a column of ten figures, from 10 to 1, and it means the number of times that the unit that appears first on disk No. 3 is taken, which can be seen through a transparent sector and whose equivalent in the units that go in second place they are next to him in the other disc. As far as the thermometer groups the Centigrade and Fahrenheit systems and their divisions or degrees are placed one against the other, which allows to pass from one system to another without the need of any operation. (Machine-translation by Google Translate, not legally binding)