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Barros Fdo De
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Barros Fdo De
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Application filed by Barros Fdo DefiledCriticalBarros Fdo De
Priority to ES1970161466UpriorityCriticalpatent/ES161466Y/en
Publication of ES161466UpublicationCriticalpatent/ES161466U/en
Application grantedgrantedCritical
Publication of ES161466YpublicationCriticalpatent/ES161466Y/en
Improved navigation trapezoid, resulting in an isosceles trapezoid for the same purpose, characterized by being of. Transparent material and having the shape of an isosceles trapezoid to which an auxiliary rule is coupled or not), with inclined sides of 452 on the larger base, thus forming, between them, an angle of 902. (Machine-translation by Google Translate, not legally binding)