STAEDTLER Adjustable Triangle Ruler with Slope and Rise - 10"

STAEDTLER Adjustable Triangle Ruler with Slope and Rise - 10". Clear acrylic with smooth edges. Protractor section is graduated in 1/2 degree increments from 0 to 90 degrees. Thick clear acrylic prevents warping and provides maximum stiffness. Magnifier allows for precise, easy to read settings. 1/2 degree increments on protractor. Beveled straight edge.