6 Pieces plastic measuring templates building formwork stencils geometric drawing rulers for office and school, clear green Use occasions: These templates fit for house planning, geometry drawing in mathematics, art work, architecture, fractional measurement, useful supplies for you in the school and office. Design: The corners of the ruler are provided with radians, which are not easy to harm your hands, each ruler has different patterns and scales, the rulers can meet your various meets. Specifications: Double scale building ruler: 24.3 x 9.5 cm Building template: 19.9 x 8.9 cm Furniture building template: 19 x 9 cm Geometric drawing template: 22 x 10 cm Irregular geometric template: approx. 19.