Alvin TD1143 Isometric Piping drafting template is similar to Rapidesign R-43. Contains piping systems components such as valves, flanges, elbows, reducers, caps, pumps, and more. Can be tilted 3 ways; one of the 3 planes of a perspective view, all with allowance for pencil point. Plastic pipe drawing stencil. Approx. size: 5.25" x 8.5" x .030". Alvin pipe layout drawing stencil is milled, not punched for precision accuracy. Non-glare, odor free, flexible, durable, translucent green plastic.