Pacific Arc | Economy Triangular Scale Ruler | Architect, Engineer, Mechanical Engineer & Metric Scales.

Available in a wide array of graduations. CHOOSE THE RIGHT SCALE FOR YOU! USE CHART! Packaged in plastic pouch. High quality plastic promises strength and demonstrates long-lasting calibers. Available in inches and metric Scale Options:Architect - 3/32, 3/16, 3/8, 1/2, 3/4, 1-1/2, & 3 in to the ftEngineer - Fully Divided: 10, 20, 30 , 40 , 50, & 60 Parts to the InchMechanical Engineer - Openly Divided by 1/8, 1/4, 1/2, and 1 inch to The Foot; 1/4,                    1/2, 3/8, 3/4 to The Size,16 and 50 Parts to The inchInch / Metric A - 1/16, 1/32, 10, 50 in to ft;  mm, cmInch / Metric B - 1/2, 1/4,32, full 50 ; mm, cmMetric 02- Scaled by : 1:20,33 1/3, 40, 50, 80, 100 or .05, .03, .025, .02, .0125, .01.Metric 03 - Scaled by : 1:100,200,250,300,400,500Metric 04 - Scaled by : 1:20,25,50,75,100,125Metric 05 - Scaled by : 1:500, 100, 1250, 1500, 2000, 2500