Vicmetro - Protractor & Ruler

Bringing together theory and practice, this application provides immediate answers for angles, cathetus, hypotenuse and trigonometric calculations without the use of calculators, rulers, protractors, sine tables, cosine, tangent and cotangent.

Keeping the analog experience of rulers and protractors, it provides not only a quick reading of the trigonometric quantities, but also facilitates the understanding of the mathematical relationships in a practical and easy way.


This application was based on a real analog instrument called Vicmetro, designed and manufactured in Brazil by its inventor Vicente Parra.

http://vicmetro.com.br