AngleGuide™ Guided Cut AccuracyA Must Have Tool In Your Toolbox Enables external and internal angles to be read direct from a scale. Divides top angle in two without changing the setting. Ideal for measuring angles when mitre cutting large boards, fillets and architraves. Its really helpful when you have to cut tricky custom angles, will save a lot of time and frustration for measuring corners and cutting quickly. No more do over and wasted materials, whether you're working with