Chartpak 1153I Templates, Architect & Builder Symbols, 8" x 12", Smoke CHA1153I CHA 1153I, Created for the needs of architects, drafters and contractors. Smooth aperatures and risers on the underside of the template promote ease of movement as well as help prevent smudging from writing instruments. These smoke gray templates are .03" thick. Scale: 1/4"=1". Color(s): Smoke; Material(s): Plastic; Length: 10 in; Width: 8 in., UPC 014173152305