12-Inch triangular scale
Three sides with six different scales feature die-engraved graduations
Scale Options:
Architect - 3/32, 3/16, 3/8, 1/2, 3/4, 1-1/2, & 3 in to the ft
Engineer - Fully Divided: 10, 20, 30 , 40 , 50, & 60 Parts to the Inch
Metric 03 - Scaled by : 1:100,200,250,300,400,500
Metric 04 - Scaled by : 1:20,25,50,75,100,125
