Patent ID: 8206155

Claim:
A trigonometry teaching aid system for providing young adults with real world applications for applying the principles of trigonometry comprising of: a plurality of planar forked support members, a cylindrical hole on the upper end of each of said support members, a scope having at least one elongated hollow primary tube, a cylindrical solid shaft; transversally extending out of said tube and pivotally joining to said cylindrical holes, a asymmetrically weighing gravity dial, a hole on said gravity dial's diametric center, said dial pivotally and coaxially connecting to said shaft via said hole, scaling graduations radially positioned on said dial's outer surface, means for enabling said gravity dial to reproducibly orient itself under the influence of gravity; whereby true horizontal and vertical ,angulations can be determined, including having scaling graduations radially positioned on said dial's surface, and having an asymmetrical weight distribution on said gravity dial when pivoting freely about its diametric center.