Staedtler 12-Inches Architect Triangular Scale (98718-31BK) Color-coded grooves ensure quick and accurate selection of the desired scale Three sides with six different scales feature die-engraved graduations This item is manufactured in Japan Size: 1"W x 12"L Perfect ruler for architects. Perfect ruler for architects. Three sides with six different scales. Open divided: 3/32, 1/8, 3/16, 1/4, 3/8, 1/2, 3/4, 1, 1 1/2, 3" = 1 foot. White plastic. 12-inch long Scale Accurate and versatile, triangular scales