Professionals can use the #836 ANGLE-IZER® Template Tool to make bulls eyes, arches and plumb cuts on roof joists. DIYers can use it to lay out a brick patio or tile floor. The tool can also create repetitive angles or shapes for marking bricks, tiles, lumber and laminates. The ANGLE-IZER® is an essential tool for any toolbox! - See more at: https://www.generaltools.com/angle-izer-template-tool#sthash.d1Q71e66.dpuf