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Priority to ES0007322UpriorityCriticalpatent/ES7322Y/en
Publication of ES7322UpublicationCriticalpatent/ES7322U/en
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Publication of ES7322YpublicationCriticalpatent/ES7322Y/en
A mobile square for draughtsmen characterized because it consists essentially of two rules mounted at 90º to each other and that rotate on a pivot of the piece that serves as a guide on the rule being able to fix the rules in the desired position by a nut of tightness with thread on the end of said pivot. (Machine-translation by Google Translate, not legally binding)
ES0007322U1942-03-171942-03-17
Mobile square for draftsmen.
ExpiredES7322Y
(en)
Apparatus possessing a rule and that, by means of manual operation, moves parallel distances equally and adjustable at will (Machine-translation by Google Translate, not legally binding)
A procedure and apparatus for calculating the square root of a circle and, to be able to calculate the diameter of an equivalent circle according to the side of a square (Machine-translation by Google Translate, not legally binding)