With tracing edge and finger liftcontains 45 circles from 1mm to 10mm in 0.5mm increments and from 11mm to 36mm in 1mm incrementsall circles have tangential squares for precise alignmentincludes protractor 360/5° and pie chart 100/1%, 160mm scale and rounded corners of 20, 22, 25 and 28mm radii3.5mm stencil with r, o, numbers and arrows1.6mm green transparent sbssize: 260x130mm