Alvin TD421 General Purpose pocket template has cutouts to help you draw circles, hexagons, triangles, squares, brackets, traffic and mapping symbols. Includes 4 inch ruler graduated in 1/16ths and 1/8ths. Sizes range from 3/32 up to 5/16 in. Great little drawing template fits in your pocket for job sites or sketching on-the-go. Transparent green flexible plastic stencil size: 2.75 x 5.25 x .030 inches. Alvin drafting templates are quality-made in the USA.