Free Deformation: The six-fold design easily folds into squares, hexagons, trapezoids, and other custom templates to measure unique architectural Locators: Many versions include built-in interchangeable stencils that act as a hole punch locator.Dual Scale: Displays markings in both metric (cm/mm) and imperial (inches) on the rulers.Material: Constructed from durable yet lightweight aluminum alloy, making it resistant to rust and wear.