Sahra Industrial Design

Makers of Thread Ruler

 

What's New

TreadRuler adds an extra dimension to plotting geometric figures. Students learn the properties of elliptic functions with the use of Thread Ruler by physically seeing the change in the radii during the course of plotting. Thread Ruler has been well received by several math teachers in Louisiana and California.

Introducing Thread Ruler

The first commercial product of its kind that can draw elliptic figures.

Draw Ellipse, Arcs, Circles, Angles and Parallel lines

A combination of a protractor, compass and ruler as a geometry set with a unique thread construction that enables the user to draw elliptic figures. Thread Ruler is a patented product (Patent #7080459) for its capability of drawing an ellipse, arcs, circles, angles and parallel lines.

A Complete Geometry Set in One piece.

The single piece Thread Ruler replaces a multi-part traditional geometry set (that usually comes with seven or eight discrete pieces) at a much lower cost. As an introductory product we have reduced the pricing on the product to $1.45/pc for a quantity of 1000.


 

Thread Ruler