The BORA 530301 is an Angle Master. The Bora 530301 Angle master allows you to measure corners and transfer the correct miter angle directly to your miter saw. It can be used for internal or external angles from 70 -180 degrees and gives you the correct miter angel and converts it to the precise cutting angle. The Angle Master has a treated aluminum surface and a complete graduate scale for both the corner and miter angle. Features: * Transfer a correct miter angle directly to your miter saw * Measures internal or external angles from 70 - 180 degrees (miter angle from 35 - 90 degrees) * Complete with a graduated scale for both corner and miter angle * treated aluminum surface * Made in Sweden. What"s In the Box: * BORA 530301 Angle Master