Crane-scale to know accurately the distances, both by rail and road, from any capital of spain to all others, amount to be paid for each route and statistics. (Machine-translation by Google Translate, not legally binding)

摘要

The ownership and exclusive exploitation of a guide-scale, consisting of cover in the form of covers of books A, rectangular in shape, which are covered with double bottom, each one of its covers resembling a kind of envelope, where they are enclosed, merced to which numerical tables C are easily slid, whose figures of said tables form a certain number of vertical columns, subject to symmetrical measures, always coinciding with the visual combination, going in each column of the mentioned ones printed a name. (Machine-translation by Google Translate, not legally binding)