Different utilities: These rulers have different shape, different shape can draw different works, you can draw circle, circular cylindrical cones with ease, very practical to use. Wide applications: Suitable for art design, fractional measurement, building formwork and drawing templates, a good learning and office. size: Whole length: 7.87 to 9.84 inches Width: 3.93 to 5.8 inches Material:plastic colour:Green Package Contents: 2 x Circle template 1 x oval template 1 x circle radius drawing template Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.