Woodpeckers Bevel Block complements the Sliding Bevel Gauges perfectly. It gives you a physical reference for the 5 most common mitre angles and the three most common dovetail angles. By referencing different sides of the Bevel Block, you have the primary angle, its complement (90° - angle) and its supplement (180° - angle).
Note that some images serve as range illustrations and may not reflect the actual models and quantities. For an accurate depiction, see the first image on a white background.