https://habitium.com/ie/spring-calipers-and-squares/1281367-quadrant-protractor-for-0-to-180-degrees-20-cm-diameter-30-cm-arm-anodised-black-duralumin-vogel.htmlGB-1281367Quadrant protractor for 0 to 180 degrees 20 cm diameter 30 cm arm anodised black duralumin Vogelhttps://cdn.habitium.com/5295151/quadrant-protractor-for-0-to-180-degrees-20-cm-diameter-30-cm-arm-anodised-black-duralumin-vogel.jpg?sto=true&width=48079.54instockVogel110.2864.672724.99/Spring Calipers and Squares