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Un juguete educativo que consistiendo en un arco con cuerda cortante se caracteriza esencialmente por estar constituido por un cuerpo con forma de lira semejante al perfil de una "U" de brazos notablemente prolongados y ligeramente divergentes los cuales mantienen en tensa rigidez con sus extremos a una varilla alámbrica capacitada para actuar de elemento a través de la masa de placas planas y lisas de un material compacto pero de reconocida blandura en su cohesión.